Sleep deprivation, death threats used

Treatment in secret prisons a decade ago was worse than the government told Congress or the public, said the report from the Senate Intelligence Committee.

Five hundred pages were released, representing the executive summary and conclusions of a still-classified 6,700-page full investigation.

Tactics included weeks of sleep deprivation, slapping and slamming of detainees against walls, confining them to small boxes, keeping them isolated for prolonged periods and threatening them with death. Three detainees faced the simulated drowning technique known as waterboarding. Many developed psychological problems.