Doctors and psychologists the CIA employed to monitor its "enhanced interrogation" of terror suspects came close to, and may even have committed, unlawful human experimentation, a medical ethics watchdog has alleged.
The most incendiary accusation of PHR's latest report, Aiding Torture, is that doctors actively monitored the CIA's interrogation techniques with a view to determining their effectiveness, using detainees as human subjects without their consent. The report concludes that such data gathering was "a practice that approaches unlawful experimentation".
In April, a leaked report from the International Committee of the Red Cross found that medical staff employed by the CIA had been present during waterboarding, and had even used what appeared to be a pulse oxymeter, placed on the prisoner's finger to monitor his oxygen saturation during the procedure
US President Barack Obama's choice for a top intelligence job has withdrawn after questions about his experience of CIA interrogation techniques.
Phillip Mudd worked for the CIA under former President George W Bush.