Paris ? The CIA ran secret jails in Poland and Romania to interrogate key terror suspects, shackling and handcuffing inmates, keeping some naked for weeks and reducing contact with the outer world to masked and silent guards, a European investigator said Friday.

The CIA called the report “distorted,” but stopped short of denying the existence of prisons in the two countries – the agency said it does not discuss the location of its overseas facilities. Poland and Romania also vehemently denied the allegations.

“High value detainees” like self-proclaimed 9/11 mastermind Khalid Sheikh Mohammed and suspected senior al-Qaida operative Abu Zubaydah were held in Poland, said the report, which cited CIA sources. It said lesser detainees, but still of “remarkable importance,” were taken to Romania.

Following a meeting with President Bush in Gdansk, Polish President Lech Kaczynski told reporters: “I know nothing about any CIA prisons in Poland.” His predecessor, Aleksander Kwasniewski, who was president in 2001-05, said: “I deny it. I’ve said as much several times.”

Former Romanian President Ion Iliescu, mentioned in a list of ranking officials who allegedly had knowledge of the prisons, dismissed Marty’s report as “stupid.”