Under the Unlawful Activities (Prevention) Act, 1967, an accused ordinarily becomes entitled to default bail if investigation is not completed within 90 days — but Section 43D(2)(b) permits the Special Court to extend that period up to 180 days. Can the accused appeal an order granting such an extension? In Hurba Petro & Ors. v. Union of India & Ors., CRL.A. 630/2026, decided on 4 August 2026, a Division Bench of the High Court of Delhi comprising Justice Prathiba M. Singh and Justice Vikas Mahajan has answered no: the extension order is interlocutory, and no appeal lies under Section 21 of the National Investigation Agency Act, 2008.
The background
The appellants, foreign nationals, were arrested in a case registered under Section 18 of the UAPA on allegations of conspiring with armed groups operating across the border in Myanmar. As the initial 90-day period of custody neared its end, the National Investigation Agency applied under Section 43D(2)(b) of the UAPA for extension of the time to complete investigation, up to the statutory maximum of 180 days. The Special Court granted the extension. The accused carried the matter to the High Court by way of an appeal under Section 21 of the NIA Act, contending that the extension defeated their imminent right to default bail.
The question of appealability
Section 21 of the NIA Act permits appeals to the High Court from judgments, sentences and orders of a Special Court — but expressly excludes interlocutory orders. The dividing line, drawn since Madhu Limaye v. State of Maharashtra (1977), asks whether the order finally determines a right or merely regulates an ongoing proceeding.
Extension refused
The consequence is immediate and decisive: the investigation period ends, and the accused's right to default bail crystallises. Such an order affects rights in a manner that is not merely procedural.
Extension granted
The accused's entitlement to default bail is postponed, not extinguished. Nothing irreversible occurs: if investigation remains incomplete at the extended deadline, the right revives in full. The order is interlocutory.
Applying this distinction, the Division Bench held that an order granting extension of time under Section 43D(2)(b) is interlocutory and therefore not appealable under Section 21. The Court considered the earlier line of authority, including Syed Shahid Yousuf v. NIA (2018) and NIA v. Akhil Gogoi (2022), before concluding that grant of extension leaves the accused's statutory protection intact, though deferred.
The remedy that survives
Holding that no appeal lies did not leave the accused without recourse. The Bench observed that an order granting extension remains amenable to judicial review under Section 482 of the CrPC — the provision now carried forward as Section 528 of the Bharatiya Nagarik Suraksha Sanhita, 2023 — and, rather than dismissing the challenge outright, converted the appeal into a petition under Section 482 for consideration on that basis.
The distinction matters procedurally. An appeal under Section 21 of the NIA Act lies as of right and is heard by a Division Bench; the inherent jurisdiction under Section 482 CrPC / Section 528 BNSS is discretionary and supervisory. The scope of interference with a Special Court's satisfaction under Section 43D(2)(b) is correspondingly narrower.
What the Special Court must still be shown
The judgment does not dilute the safeguards built into Section 43D(2)(b) itself. Before granting an extension beyond 90 days, the Special Court must have before it a report of the Public Prosecutor — not merely of the investigating officer — indicating the progress of the investigation and setting out specific reasons for continued detention. The satisfaction must be the court's own. Defence counsel retain the ability to test whether these preconditions were met, now through the route of judicial review rather than statutory appeal.
Practical points for the defence in UAPA matters:
- Track the custody calendar precisely; an application for default bail filed before an extension is granted stands on a different footing from one filed after.
- Scrutinise the Public Prosecutor's report: an extension granted on the investigating agency's request alone, without independent prosecutorial application of mind, is vulnerable.
- Challenge to a granted extension now lies under Section 528 BNSS / Section 482 CrPC before the High Court, not by appeal under Section 21 NIA Act.
- If the extended period expires without a charge-sheet, the right to default bail revives and should be exercised immediately.
The wider context
Special-statute prosecutions in Delhi — under the UAPA, the NDPS Act and the PMLA — increasingly turn on questions of custody timelines and the maintainability of challenges at the pre-trial stage. Hurba Petro adds a clear rule for one recurring situation and channels those challenges into the supervisory jurisdiction of the High Court. For accused persons and their families, the practical lesson is that time limits in special statutes are enforced strictly in both directions: the agency must justify every extension, and the defence must move without delay when a statutory right accrues.
The chamber of Advocate Manish Jha appears in bail and special-statute matters before the District Courts of Delhi and the High Court of Delhi. This article is for general information only and is not legal advice.
Frequently Asked Questions
What is default bail and how does UAPA change it?
Default bail is the statutory right of an accused to be released if the investigating agency does not complete investigation within the prescribed period — ordinarily 60 or 90 days. In UAPA cases, Section 43D(2)(b) allows the court, on the Public Prosecutor's report showing progress and specific reasons, to extend the 90-day period up to 180 days, postponing that entitlement.
Why is an order extending investigation time not appealable?
The Delhi High Court reasoned that Section 21 of the NIA Act bars appeals against interlocutory orders. An order granting extension does not finally decide any right: it merely postpones the accused's entitlement to default bail rather than extinguishing it, and therefore lacks the irreversible consequences that would take it out of the interlocutory category.
What remedy does the accused have against an extension order?
The Division Bench held that such an order remains open to judicial review under Section 482 of the Code of Criminal Procedure, 1973 — now Section 528 of the Bharatiya Nagarik Suraksha Sanhita, 2023. In Hurba Petro itself, the Court converted the appeal into a petition under Section 482 CrPC so the challenge could be examined on that footing.
Is an order refusing an extension treated the same way?
No. The Bench drew a distinction between orders granting and orders refusing extension. Refusal of extension has an immediate and decisive consequence — the accused's right to default bail crystallises — so the two situations do not stand on the same footing for purposes of appealability.