WASHINGTON – A former CIA officer has broken the U.S. silence around the 2003 abduction of a radical Islamist cleric in Italy, charging that the agency inflated the threat the preacher posed and that the United States then allowed Italy to prosecute her and other Americans to shield high-ranking U.S. officials.

Revealing for the first time that she worked undercover for the CIA in Milan when the operation took place, Sabrina De Sousa provided new details about the “extraordinary rendition” program. The case in Italy led to the only criminal prosecution stemming from the secret Bush administration program launched after the Sept. 11, 2001, terror attacks.

The cleric, Osama Mustapha Hassan Nasr, was snatched from a Milan street by a team of CIA operatives and flown to Egypt, where he was held for the better part of four years without charges and allegedly tortured. An Egyptian court in 2007 ruled that his imprisonment was “unfounded” and ordered him released.

Among the allegations made by De Sousa in a series of interviews with McClatchy:

Former CIA station chief in Rome, Jeffrey Castelli, whom she called the mastermind of the operation, exaggerated Nasr’s terrorist threat to win approval for the rendition and misled his superiors that Italian military intelligence had agreed to the operation.

Senior CIA officials, including then-CIA Director George Tenet, approved the operation even though there were doubts about Castelli’s case.

Condoleezza Rice, then the White House national security adviser, also had concerns about the case, especially what Italy would do if the CIA were caught, but she eventually agreed to it and recommended that Bush approve the abduction.

De Sousa said her assertions are based on classified CIA cables that she read before resigning from the agency in February 2009, as well as on Italian legal documents and news reports. She denies she was involved in the operation, though she acknowledges that she served as the interpreter for a CIA “snatch” team that visited Milan in 2002 to plan the abduction.

“I was being held accountable for decisions that someone else took and I wanted to see on what basis the decisions were made,” she said, explaining why she had delved into the CIA archives. “And especially because I was willing to talk to the Hill (Congress) about this because I knew that the CIA would not be upfront with them.”

De Sousa is one of a handful of former CIA officers who’ve spoken openly about the secret renditions in which suspected terrorists overseas were abducted without legal proceedings and then interrogated by other nations’ security services.

More than 130 people were “rendered” in this way, according to a February 2013 study by the Open Society Justice Initiative, a U.S.-based group that promotes the rule of law. Many were tortured, and many, including Nasr, were freed for lack of proof that they were hatching terrorist plots, said Amrit Singh, the study’s author.