EU investigators have announced that the CIA had secret prisons set up in Italy and Poland. Furthermore, they say there is evidence that 14 European countries helped to set up the jails, which violates the Geneva Convention.
An earlier report named officials from Poland and Romania as having firsthand knowledge of the detention centres.
But both of the countries' officials have dismissed the allegations because it is based on testimonies of unnamed witnesses.
Last year, U.S. President George Bush said there were CIA prisons abroad to help fight terrorism, but did not specify which countries were involved.