US has secret prisons: rights group:

A Human Rights groups claims the USA has a network of illegal, secret detention centres around the world, includign Kohat in Pakistan near the border with Afghanistan, on the Indian Ocean island of Diego Garcia and a CIA interrogation facility at Al Jafr prison in Jordan.

Prisoners are also being held at the Naval Consolidated Brig in Charleston, South Carolina, and others were suspected of being held on US warships."