Period of Custody — 90 + 90 Days (Total 180)

Few provisions of the Unlawful Activities (Prevention) Act, 1967 decide liberty as silently as Section 43-D(2). It does not create an offence; it re-engineers time. By overwriting the language of Section 167(2) of the Code of Criminal Procedure, 1973, it doubles the period within which the prosecution must file its charge-sheet from the ordinary ninety days to a maximum of one hundred and eighty days. But that extra ninety days is not a gift to the State by default. It is conditional, it must be earned by a report of the Public Prosecutor, and the failure to earn it converts the accused's continued detention into an illegality that the courts call the indefeasible right to default bail. This note maps the 90 + 90 architecture, the procedure for the second leg, and the case law from Hitendra Vishnu Thakur to Bikramjit Singh and Sadique that polices it.

The Statutory Architecture: How 43-D(2) Rewrites Section 167

The default-bail mechanism lives not in the UAPA but in the proviso to Section 167(2) of the Code of Criminal Procedure, 1973. That proviso ordinarily compels a Magistrate to release an accused on bail, irrespective of the gravity of the offence, if the investigating agency fails to file the police report within ninety days (for offences punishable with death, life imprisonment or imprisonment for ten years or more) or sixty days (for lesser offences). The expiry of that period creates a right that is mechanical and indefeasible because the legislature treats prolonged pre-charge custody as itself a violation of liberty.

Section 43-D(2) of the UAPA modifies this scheme in two surgical steps. Clause (a) substitutes the references to "sixty days" wherever they occur in Section 167(2) with "ninety days", so that the baseline for all UAPA-scheduled offences becomes ninety days. Clause (b) then inserts a further proviso: "Provided further that if it is not possible to complete the investigation within the said period of ninety days, the Court may if it is satisfied with the report of the Public Prosecutor indicating the progress of the investigation and the specific reasons for the detention of the accused beyond the said period of ninety days, extend the said period up to one hundred and eighty days." The result is the familiar 90 + 90 formula, with a hard ceiling of one hundred and eighty days.

Two features of this drafting matter throughout. First, the second ninety-day block is not automatic; it is an extension that the Court must affirmatively grant on satisfaction. Second, the trigger for that satisfaction is a specific instrument, the report of the Public Prosecutor, not a request of the investigating officer. Both features are the source of almost all the litigation in this area.

The Two-Leg Structure: First 90, Then 90

It helps to think of UAPA custody during investigation as two distinct legs rather than one continuous 180-day stretch. The first leg runs from the date of remand to the ninetieth day. During this leg the State enjoys an unconditional statutory window: it may complete its investigation and file the charge-sheet at any time, and no separate justification is required. If the charge-sheet is filed within ninety days, Section 43-D(2)(b) never comes into play and the question of default bail does not arise.

The second leg, the additional ninety days, is qualitatively different. It does not begin on its own. The prosecution must, before the first ninety days expire, persuade the Court to extend the period. That persuasion is structured around the report of the Public Prosecutor. The clock therefore does not run smoothly from day one to day one hundred and eighty; it pauses at day ninety, where the burden shifts to the State to show why a person who has not been charged should remain in custody for up to another ninety days.

This bifurcation explains why slow investigation in the first leg can be fatal. As the Uttarakhand High Court has observed in the Section 43-D(2)(b) context, where the agency records no substantial progress in the initial ninety days, it cannot validly seek an extension, and the accused becomes entitled to default bail. The extension is a reward for demonstrable progress, not a routine renewal. For the underlying scheme of who may be detained at all under this Act, see our note on the offences and penalties for terrorist acts.

The Public Prosecutor's Report: The Gatekeeper of the Second 90

The single most litigated element of Section 43-D(2)(b) is the report of the Public Prosecutor. The proviso requires that report to do two things: indicate the progress of the investigation and state the specific reasons for the continued detention of the accused beyond ninety days. The Court's power to extend is expressly conditioned on its satisfaction with that report. A bald prayer for more time, or a request emanating from the investigating officer alone, does not meet the statutory description.

The conceptual foundation was laid under the analogous TADA provision in Hitendra Vishnu Thakur v. State of Maharashtra, (1994) 4 SCC 602. The Supreme Court there held that an extension of custody beyond the prescribed period is valid only where a proper report of the Public Prosecutor, applying his own mind to the material and stating the progress and the specific reasons for further detention, is placed before the Designated Court. The report cannot be a mechanical endorsement of the police request; it must reflect the Public Prosecutor's independent satisfaction. This reasoning has been carried directly into the UAPA because Section 43-D(2)(b) borrows the same architecture and almost the same words.

At the same time, the courts have resisted converting the requirement into a fetish of form. In State of Maharashtra v. Surendra Pundlik Gadling, (2019) 5 SCC 178, arising from the Bhima Koregaon investigation, the Supreme Court emphasised substance over form: even where a separate, formally styled report is technically absent, an extension can be sustained if the material shows that the Public Prosecutor had in fact scrutinised the record, set out the progress of the investigation and articulated the reasons for the accused's continued detention. The test is functional, did the Public Prosecutor genuinely apply his mind and convey progress and reasons, not whether a document bearing a particular label was filed.

Notice to the Accused on the Extension Application

A recurring sub-question is whether the accused is entitled to notice of, and a hearing on, the application for extension under Section 43-D(2)(b). The TADA jurisprudence in Hitendra Vishnu Thakur treated the accused's awareness of the extension proceeding as part of fair procedure, since an extension directly prolongs his loss of liberty. Several High Courts have applied this logic to the UAPA, holding that an extension granted behind the accused's back, without his being put on notice that the State is seeking the second ninety days, is vulnerable.

The position, however, is not monolithic. Courts have drawn a distinction between the right to be informed that an extension is being sought, which the better view supports, and any claimed right to receive a copy of the Public Prosecutor's report itself. On the latter, some High Courts have held that the report need not be served on the accused, treating it as an internal instrument addressed to the Court's satisfaction rather than a pleading to be answered. The Bombay High Court, for instance, has held that an extension of detention under Section 43-D(2) is not vitiated merely because the Prosecutor's report was not served on the accused. The safer reading for an examinee is that the accused must at least know an extension is being sought and have an opportunity to oppose it, while the question of furnishing the actual report remains contested.

The practical significance is large: an extension order tainted by want of notice may be treated as no valid extension at all, which in turn means the ninety-day clock was never lawfully extended, which in turn revives the right to default bail. For the broader procedural machinery within which these applications are heard, compare the adjudicatory model in our note on the tribunal for adjudication of unlawful associations.

Who May Extend: "The Court", Not the Magistrate

The text of Section 43-D(2)(b) confers the power to extend on "the Court". Read with the National Investigation Agency Act, 2008, this has decisive consequences for jurisdiction, because for scheduled offences the competent forum is the Special Court, not the ordinary Magistrate.

This was squarely decided in Bikramjit Singh v. State of Punjab, (2020) 10 SCC 616. A three-judge Bench (Nariman, Navin Sinha and K.M. Joseph, JJ.) held that once an offence is added under the UAPA, exclusive jurisdiction over remand, extension of the investigation period and the consequential question of default bail vests in the Special Court constituted under the NIA Act, and not in the Magistrate. An extension purportedly granted by a Magistrate in such a case is without jurisdiction.

The principle was reinforced in State of Madhya Pradesh v. Sadique (2022), where the Supreme Court held in terms that "so far as all offences under the UAPA are concerned, the Magistrate's jurisdiction to extend time under the first proviso in Section 43-D(2)(b) is non-existent", and that only "the Court" specified in the proviso may consider such a request. Because in Sadique the extension had been granted by a Chief Judicial Magistrate, the extension was a nullity, the ninety-day period stood un-extended, and the accused were held entitled to default bail. The Court later dismissed the State's review petition. The lesson is unforgiving for the prosecution: a procedurally perfect Prosecutor's report placed before the wrong forum buys nothing.

Default Bail as a Fundamental Right under Article 21

The consequence of crossing ninety days (or one hundred and eighty days) without a charge-sheet or a valid extension is not merely a statutory entitlement; it is a facet of the fundamental right to personal liberty. In Bikramjit Singh, the Supreme Court held that the right to default bail under the first proviso to Section 167(2) is part of the procedure established by law under Article 21 of the Constitution and is therefore a fundamental right of the accused once the conditions of the proviso are satisfied.

This constitutional characterisation was elaborated in M. Ravindran v. Intelligence Officer, Directorate of Revenue Intelligence, (2021) 2 SCC 485, where the Court described the indefeasible right to default bail as an integral part of the right to personal liberty under Article 21, a right so basic that it could not be suspended even during the COVID-19 pandemic. Detention beyond the statutory period without a charge-sheet, the Court held, is a subterfuge not in conformity with the Code and potentially violative of Article 21.

The constitutional grounding matters because it sets default bail apart from ordinary bail. Default bail is not concerned with the strength of the evidence, the gravity of the accusation, or the likelihood of conviction. It is triggered purely by the State's failure to keep within time. That is why the stringent bail bar discussed below cannot be invoked to defeat it.

The "Indefeasible Right" and When It Must Be Availed

The right to default bail is indefeasible, but it is not self-executing; it must be claimed at the right moment. The foundational ruling is the Constitution Bench decision in Sanjay Dutt v. State through CBI, Bombay (II), (1994) 5 SCC 410, which held that the indefeasible right accruing to the accused on the expiry of the statutory period is enforceable only before the charge-sheet is filed, and does not survive the filing of the charge-sheet "if not already availed of".

The crucial gloss on what it means to "avail" the right came in Uday Mohanlal Acharya v. State of Maharashtra, (2001) 5 SCC 453. The Supreme Court held that an accused avails the right the moment he files an application for default bail and offers to furnish bail on being directed; he need not have actually furnished the bond, nor must the court have fixed the terms. Once that application is made before any charge-sheet is filed, a later filing of the charge-sheet cannot defeat the accrued right.

This protective reading was completed in M. Ravindran, which held that the right, once availed by application, continues to remain enforceable notwithstanding the pendency of the application, the subsequent filing of the charge-sheet, the subsequent filing of a report seeking extension, or the filing of a charge-sheet while a challenge to the rejection of the bail application is pending before a higher court. The flip side, also stated in M. Ravindran, is that where the accused sleeps on the right and files no application before the charge-sheet (or extension report) is filed, the right is extinguished. Timing, in short, is everything.

Default Bail Distinguished from Regular Bail under Section 43-D(5)

It is essential not to confuse the time-based default bail under Section 167(2) with the merits-based regular bail governed by Section 43-D(5) of the UAPA. The latter erects a formidable bar: a court shall not release a UAPA accused on bail if, on a perusal of the case diary or the report under Section 173 CrPC, it is of the opinion that there are reasonable grounds for believing that the accusation is prima facie true.

The contours of that bar were set in National Investigation Agency v. Zahoor Ahmad Shah Watali, (2019) 5 SCC 1, where the Supreme Court held that at the bail stage the court must accept the material placed by the prosecution on its face value, cannot weigh evidence as at trial, and must deny bail if the totality of that material discloses a prima facie true accusation. Watali made regular bail under the UAPA exceptionally difficult to obtain after charges are framed.

The decisive point for this topic is that the Watali/Section 43-D(5) standard has no application to default bail. Default bail is granted because of the State's procedural default, not because the court has assessed the accusation as weak. Both Bikramjit Singh and M. Ravindran affirm that the rigours of Section 43-D(5) cannot be imported to defeat an accrued right under Section 167(2). However stringent the merits bar, it is irrelevant once the ninety- or one-hundred-and-eighty-day clock has run out without a charge-sheet or a valid extension.

Computation: When the Clock Starts and Stops

Because default bail turns on time, the computation of the ninety- and one-hundred-and-eighty-day periods is not a trivial detail. The period of detention is reckoned from the date the accused is first remanded to custody by the Magistrate, not from the date of arrest as such, although in practice these are close together. The day of remand is included in the computation. The period ends when the prescribed number of days expires, after which the right crystallises if no charge-sheet has been filed and no valid extension obtained.

Filing of the charge-sheet within the period is sufficient compliance even if cognizance has not yet been taken; the relevant act is the filing of the police report, not the court's cognizance. Conversely, an incomplete or piecemeal charge-sheet filed only to stop the clock, while investigation in substance continues, has been viewed with suspicion, because it would otherwise let the State circumvent the very purpose of Section 167(2).

Where the second leg has been validly invoked, the outer limit is one hundred and eighty days; there is no further extension available under Section 43-D(2)(b) beyond that ceiling for the offences it covers. If the charge-sheet is not filed within one hundred and eighty days and the accused applies, the indefeasible right operates exactly as it would at ninety days. The arithmetic, not the gravity of the offence, governs.

When Statutory Bars Yield: Prolonged Incarceration and Article 21

A related but distinct safety valve operates where the statutory time limits have been met by the State, yet the accused remains incarcerated for years because the trial does not progress. This is not default bail, but it shares the constitutional DNA of liberty under Article 21. In Union of India v. K.A. Najeeb, (2021) 3 SCC 713, the Supreme Court held that the rigours of Section 43-D(5) "melt away" where prolonged incarceration coupled with undue delay in trial results in a violation of Article 21, and that constitutional courts retain the power to grant bail on that ground notwithstanding the statutory embargo.

The significance of Najeeb for the period-of-custody topic is comparative. Default bail addresses the front end of the process, the failure to charge in time; the Najeeb principle addresses the back end, the failure to try in time. Both are anchored in Article 21, and both illustrate the constitutional refusal to let a special statute convert detention into indefinite punishment without adjudication. Subsequent benches have clarified that Watali is not a precedent that bars bail in cases of long incarceration with no end to the trial in sight.

For the wider constitutional and historical setting in which these tensions play out, see our note on the introduction, object and constitutional background of the Act.

Consequences of an Invalid or Belated Extension

The various procedural requirements converge on a single, severe consequence: if the extension is invalid, the second ninety days never lawfully began. An extension can fail for several reasons, each independently fatal. It may fail because no report of the Public Prosecutor, properly so called, was placed before the Court (the Hitendra Vishnu Thakur defect). It may fail because the report was placed before the wrong forum, a Magistrate rather than the Special Court (the Bikramjit Singh and Sadique defect). It may fail because it was sought or granted only after the ninety days had already expired and the accused had already applied for default bail (the Sanjay Dutt and Uday Mohanlal Acharya defect).

In each of these scenarios, the legal position is the same: the un-extended ninety-day period governs, and an accused who applies for default bail before the charge-sheet is filed is entitled to release. The State cannot retrospectively cure the defect by filing a late charge-sheet or a late extension report once the right has been availed. This is the practical teeth of the doctrine; procedural lapses are not technicalities to be condoned but jurisdictional failures that restore liberty.

Exam Pointers and Common Traps

For judiciary and CLAT-PG candidates, a handful of crisp propositions carry most of the marks. First, the formula: 90 + 90 = 180 days, with the first ninety unconditional and the second ninety conditional on a Public Prosecutor's report satisfying the Court (Section 43-D(2)(b)). Second, the report must show progress and specific reasons for continued detention, applying the Prosecutor's own mind (Hitendra Vishnu Thakur), though substance prevails over form (Surendra Gadling).

Third, only "the Court", the Special Court under the NIA Act, may extend; the Magistrate's jurisdiction is non-existent (Bikramjit Singh; Sadique). Fourth, default bail is a fundamental right under Article 21 (Bikramjit Singh; M. Ravindran), distinct from and unaffected by the merits bar in Section 43-D(5) (Watali). Fifth, the right is indefeasible but must be "availed" by an application offering to furnish bail before the charge-sheet is filed (Sanjay Dutt; Uday Mohanlal Acharya; M. Ravindran).

The classic trap is to assume the second ninety days runs automatically, or that gravity of the offence can defeat default bail; both are wrong. A second trap is to confuse the merits standard of Watali with the time standard of Section 167(2). To consolidate the surrounding scheme, revisit the key definitions and the membership offences in our note on the penalty for membership of an unlawful association.