London - A former Guantanamo Bay detainee released two weeks ago Friday accused British intelligence services of providing key information that led to his torture.

Binyam Mohamed, an Ethiopian national who lived in Britain before his arrest in 2002, said he believed Britain's MI5 intelligence service had provided "70 per cent of the questions" on which his interrogation and torture were based.

Mohamed, 30, said he was tortured in Pakistan, Morocco and Afghanistan during his seven-year detention. He was arrested in Karachi in 2002 and sent to the Guantanamo base on Cuba in 2004.

"If it was not for British interrogators in Pakistan I don't think I would have gone to Morocco," Mohamed told the BBC in his first broadcast interview since his release.

"This is the British file and this is the American file," US interrogators had told him.

Mohamed said he still did not feel "secure," as the British authorities still held his files.

He described his detention as "seven years of darkness" and said he "felt dead ... not like a living person."

The British authorities have denied any complicity or tolerance of torture and said they were not involved in the process of so-called extraordinary rendition, the transfer of suspects to countries were torture is not illegal.

The attorney general is investigating whether any criminal offence was committed in the case of Mohamed, but human rights groups and opposition parties have called for a police investigation into the affair.

Mohamed was the first prisoner to be released from Guantanamo since the announcement by the new US government to close the base.

The US authorities had accused him of being involved in an al- Qaeda plot to build a "dirty bomb," but dropped all charges last year.

Mohamed said he went to Afghanistan in Britain in 2002 to "get rid of a drug problem."