CIA report: Brutal tactics amounted to torture, says Obama

The UN and human rights groups have called for the prosecution of US officials involved in what a Senate report called the "brutal" CIA interrogation of al-Qaeda suspects.

A top UN human rights envoy said there had been a "clear policy orchestrated at a high level".

In an interview with US Spanish TV network Telemundo, President Obama said he personally felt that some of the techniques used amounted to torture.