CSIS officials have interrogated a Canadian teen being held by the U.S. military at Guantanamo Bay, Cuba, his lawyers said on Wednesday.

"Canadian officials on numerous occasions have been in Guantanamo interrogating Omar Khadr," Dennis Edney, a Canadian lawyer representing Khadr, said in an interview with CBC Newsworld.

Khadr has been held by U.S. forces since July 2002, when he was captured in Afghanistan. He was 15 at the time.

Dennis Edney

The team of lawyers representing Khadr in both the United States and Canada say newly declassified U.S. documents show how the teen complains of abuse and torture during his time in custody.

The lawyers accuse the Canadian government of doing little to protect Khadr's human rights.

The Canadian government says it's trying to make sure Khadr is treated well by U.S. officials.

"Canada is pursuing a long-standing request that Canadian officials be given access to Mr. Khadr to verify his well-being," said Rodney Moore, a spokesman for the Department of Foreign Affairs.

"We have also requested access to his medical records and an independent medical assessment, [and are] continuing diplomatic efforts to ensure that he has an opportunity to respond to allegations against him before a commission or tribunal that meets internationally recognized legal standards."

The allegations were made in November 2003 when Khadr met with his U.S. lawyers, Muneer Ahmad and Richard Wilson. U.S. officials agreed just days ago to declassify portions of the transcripts of those meetings, Edney said.

The lawyers said Khadr told them he had been beaten and threatened with sexual assault.

His complaints are echoed in a lawsuit launched by the American Civil Liberties Union, which includes claims prisoners at Guantanamo Bay were chained for up to 24 hours and left in their own feces or urine.

Khadr was captured following a shootout with U.S. special forces, in which he is accused of throwing a grenade that killed a U.S. medic.

Ahmed Khadr, Omar's father, was linked to Osama bin Laden. He was killed in a shootout in Pakistan in 2003. His youngest son Karim, now 14, suffered spinal injuries and was captured at the same time.

Karim was allowed to return to Canada, along with his mother Maha Elsamnah, in April 2004 so he could receive treatment for his injuries.

Another brother, Abdurahman, was released from Guantanamo Bay in 2003. He initially said he had been left to fend for himself in Afghanistan, but later he said he had been recruited by the CIA to spy on al-Qaeda operatives in Bosnia.

The whereabouts of a fourth brother, Abdullah, are not known.