LONDON, Oct 31: Britain’s Supreme Court on Wednesday quashed a bid by a Pakistani citizen held by the US in Afghanistan to force UK authorities to secure his release, although it said there was evidence his detention violated international law.

Yunus Rahmatullah, 30, was captured by British forces in Iraq in 2004 and handed over to the Americans, who sent him to a prison at Bagram airbase in Afghanistan.

He has not been charged with a crime, but US officials have accused him of being a member of an Al Qaeda-linked terrorist group.

Last year a lower court ordered the Britain to seek Mr Rahmatullah’s release on the grounds that under international law it was responsible for his care and had the power to ask the US to free him.

But the order – known as a writ of habeas corpus – was cancelled after US officials refused to cooperate. Habeas corpus is an old legal principle – Latin for “you have the body” – requiring authorities to bring a prisoner before a court so it can judge the legality of the detention.

The Supreme Court ruled on Wednesday that both the original order and the decision to scrap it had been legal. The judges said Britain had been right to seek Mr Rahmatullah’s release, but it was clear US authorities “felt they were holding Mr Rahmatullah lawfully and were not willing to relinquish control of his detention to the UK.

However, the seven judges raised concerns about the legality of Mr Rahmatullah’s detention. In a written judgment with which a majority of the justices agreed, Lord Brian Kerr said: “The presumably forcible transfer of Mr Rahmatullah from Iraq to Afghanistan is, at least prima facie, a breach of article 49” of the Geneva Conventions on the treatment of war prisoners.

Jamie Beagent, a British lawyer representing Mr Rahmatullah, said the ruling was a victory because the Supreme Court had backed his client’s case in principle.

“Sadly, despite the fact that in international law Mr Rahmatullah remains a British detainee and the United States does not consider him a security threat, our client remains in detention at Bagram,” he said.

Mr Beagent said lawyers would continue to seek Mr Rahmatullah’s release on the basis that his detention violated the Geneva Conventions.—AP