An investigation into the illicit sale of American nuclear secrets was compromised by a senior official in the State Department, a former FBI employee has claimed. The official is said to have tipped off a foreign contact about a bogus CIA company used to investigate the sale of nuclear secrets. The firm, Brewster Jennings & Associates, was a front for Valerie Plame, the former CIA agent. Her public outing two years later in 2003 by White House officials became a cause clbre. The claims that a State Department official blew the investigation into a nuclear smuggling ring have been made by Sibel Edmonds, 38, a former Turkish language translator in the FBI's Washington field office. Plame, then 38, was the ... wife of a former US ambassador, Joe Wilson. She travelled widely for her work, often claiming to be an oil consultant. In fact she was a career CIA agent who was part of a small team investigating the same procurement network that the State Department official is alleged to have aided. Brewster Jennings was one of a number of covert enterprises set up to infiltrate the nuclear ring. [Edmonds said the State Department official] found out about the arrangement . . . and he contacted one of the foreign targets and said . . . you need to stay away from Brewster Jennings because they are a cover for the government." Phillip Giraldi, a former CIA officer, said: "It's pretty clear Plame was targeting the Turks. If indeed that [State Department] official was working with the Turks to violate US law on nuclear exports, it would have been in his interest to alert them to the fact that this woman's company was affiliated to the CIA. I don't know if that's treason legally but many people would consider it to be."