MIAMI (Reuters) - The Afghan prisoner who died at the Guantanamo detention camp this week had quit the Taliban forces because he considered them corrupt, and he was never in any way an enemy of the United States, the mans lawyer said on Friday. Awal Malim Gul, 48, collapsed and died on Tuesday after using an exercise machine at the prison camp on the Guantanamo Bay US naval base in Cuba. The US military said the death appeared to have been from natural causes but results from an autopsy would not be released at this time because they are part of an ongoing investigation. Guls body was flown to a US military base in Afghanistan on Friday and will be turned over to the Afghan government and then to his family, a military spokeswoman said. In an announcement of the death, the US military said Gul was a Taliban commander who operated an al Qaeda guest house and admitted providing operational aid to Osama bin Laden. Guls lawyer, federal public defender Matthew Dodge, called those assertions outrageous. The government has never provided any evidence at all to support this slander. Neither Mr. Gul nor any credible witness has ever said such things, said Dodge, who represented Gul in a US district court case in Washington challenging his detention. Gul was part of the US-armed mujahideen forces fighting against Soviet troops in Afghanistan in the 1980s and continued to run a weapons depot after the Taliban took it over in 1996. He told US military officers at Guantanamo that he had seen bin Laden three times in Afghanistan during the 1990s but did not interact with him except to once shake his hand.