The CIA built one of its secret European prisons inside an exclusive riding academy outside Vilnius, Lithuania, a current Lithuanian government official and a former U.S. intelligence official [said]. Where affluent Lithuanians once rode show horses and sipped coffee at a caf, the CIA installed a concrete structure where it could use harsh tactics to interrogate up to eight suspected al-Qaeda terrorists at a time. Lithuanian officials provided ABC News with the documents of what they called a CIA front company, Elite LLC, which purchased the property and built the black site" in 2004. Lithuania agreed to allow the CIA prison after President George W. Bush visited the country in 2002 and pledged support for Lithuania's efforts to join NATO. "The new members of NATO were so grateful for the U.S. role in getting them into that organization that they would do anything the U.S. asked for during that period," said former White House counterterrorism czar Richard Clarke. "They were eager to please and eager to be cooperative on security and on intelligence matters." Lithuania was one of three eastern European countries, along with Poland and Romania, where the CIA secretly interrogated suspected high-value al-Qaeda terrorists, but until now the precise site had not been confirmed.