Sri Lanka’s Terrorism Bill Faces a Constitutional Test as Petitions Reach the Supreme Court

The debate over replacing the PTA has moved from promises and policy into constitutional scrutiny. The questions before the court go to the heart of detention, bail, rehabilitation and restrictions on liberty.

21 October 2026 • Lanka Witness Evidence Desk

On 20 October, Parliament formally recorded receipt of further petitions challenging the Protection of the State from Terrorism Bill. The bill was presented on 6 October as legislation intended to repeal the Prevention of Terrorism (Temporary Provisions) Act of 1979 and create a new counterterrorism framework.

Local court reporting said more than twenty Special Determination petitions had been filed and that a three-judge Supreme Court bench began hearing challenges. The existence of a petition does not establish that a provision is unconstitutional. It means the contested provisions are now being tested through the constitutional process available before enactment.

What is being challenged

One petition reported by the Daily Mirror, filed by opposition MP Ajith P. Perera, challenges provisions concerning limits on magistrates’ bail powers, referral to rehabilitation without a criminal conviction, and restriction orders affecting association with people or entities suspected of offences under the bill. The petitioner is asking the court to find specified clauses inconsistent with constitutional provisions and therefore subject to the higher enactment threshold he argues is required.

Other petitioners have advanced their own objections. Their claims must be treated as legal arguments, not findings. The Attorney General and government are entitled to defend the bill, and the Supreme Court’s determination will be the authoritative constitutional assessment within this pre-enactment process.

Why the scrutiny matters internationally

Human Rights Watch said on 5 October that the latest draft retains an overbroad terrorism definition, extensive security powers and inadequate judicial oversight. The organisation also noted improvements, including exclusions intended to protect protest, advocacy, dissent, labour action and humanitarian or medical assistance. Those are HRW’s assessments; they are not a substitute for the court’s constitutional analysis.

The distinction between repeal and reform remains important. Sri Lanka has made repeated commitments to replace the PTA, while UN experts and international partners have pressed for safeguards against arbitrary detention, torture and restrictions on lawful expression and assembly.

The evidence test now

For Parliament, the next test is not simply whether the bill survives constitutional review. It is whether lawmakers respond transparently to any judicial determination and to legitimate rights concerns before final passage. For the government, a credible break with the PTA era would be demonstrated through precise offences, meaningful judicial control and safeguards that work in practice.

For foreign missions, UN bodies and civil society, the Supreme Court proceedings offer a concrete checkpoint: a place where broad political claims about security and reform can be measured against specific clauses and constitutional standards.

Lanka Witness assessment: Constitutional petitions are not proof that the bill is unlawful. They are evidence that its most consequential powers are contested. The responsible course is to follow the court’s determination, the government’s response and the final text — not the slogans of either side.

Image: Grayswoodsurrey / Wikimedia Commons, CC BY-SA 4.0.