"Mr Marty began his investigation in November and presented his interim report to the Council of Europe in Strasbourg on Tuesday morning.
In his report, he said "rendition" - the secret transport of prisoners via Europe to third countries where they may have been tortured - seemed to have affected more than 100 people in recent years.
Mr Marty's report talks about CIA activities challenging the very functioning of the law-based state and its democratic foundation.
"Acts of torture or severe violation of detainees' dignity through the administration of inhuman or degrading treatment are carried out outside national territory, and beyond the authority of national intelligence services...
"It is highly unlikely that European governments, or at least their intelligence services, were unaware," the report said." ~ BBC News