It quoted a civilian identified as Cyrille K, 32, who was arrested by Kabila's Republican Guard at his Kinshasa apartment and taken to the camp where, after being beaten, he and three fellow detainees were forced to strap heavy car wheel hubs to their backs and promised some "peanuts" -- slang for bullets.
Cyrille never saw the other three after they were marched off towards the Congo river, where he suspects the wheel hubs were intended to weigh down their bodies.
He was spared, only to endure further torture.
"The next day, he was taken out, tied up, forced to his knees and beaten again with planks of wood. Then, on orders from an officer, a soldier forced his penis into his mouth. He was led to the camp latrines and made to clean them on his knees," Amnesty said.
The report said Congolese police, paid around $10 a month, were responsible for an increasing number of human rights violations in recent months, including many rapes.
Amnesty said failure to complete the reform of the array of armed forces left by decades of chaos and a five-year war, which had once been seen as essential to last year's elections, had left security units under "confused or conflicting chains of command" with some answerable to individual politicians.
Congolese army units are still fighting dissident militias in eastern Congo who have refused to integrate into the army.
"In the east, where the conflict has never conclusively ended, grave human rights violations continue to be committed by government forces as well as by Congolese and foreign armed political groups," Amnesty said.
In a separate report, the Swiss branch of medical aid agency Medecins Sans Frontieres (MSF) said on Wednesday that despite a reduction in ethnic violence in Congo's eastern district of Ituri, rape continued unabated -- mostly by armed rebel or government troops.
