Many EU nations were aware that the CIA used their territory for the transfer or detention of terror suspects, a draft European parliament report says.
The report follows months of investigation by a special committee of MEPs led by an Italian, Claudio Fava.
“Many governments co-operated passively or actively (with the CIA),” said Mr Fava, quoted by AFP news agency.
He accused top EU officials including foreign policy chief Javier Solana of failing to give full details to MEPs.
The report echoed allegations made in June by the Council of Europe - Europe’s leading human rights watchdog - that European states were complicit in illegal CIA operations as part of the US-led “war on terror”.