The United States will soon release a long-awaited report detailing the findings of a Senate investigation into the CIA’s use of enhanced interrogation techniques, and sources now say those tactics far exceeded what the world was led to believe.

According to an article published on Sunday by the UK’s Telegraph, the American intelligence officers tasked with interrogating alleged Al-Qaeda members and other terror suspects in the wake of the September 11, 2001 attacks didn’t just waterboard detainees — they nearly killed them.