US prosecutors have accused a former US Air Force officer of spying for Iran in an elaborate operation that targeted her fellow intelligence officers.
Monica Witt, who allegedly defected to Iran in 2013, had previously worked as a US counterintelligence officer.
Four Iranian citizens have also been charged with attempting to install spy software on computers belonging to Witt's colleagues.
According to the FBI, Witt was last seen in southwest Asia in July 2013.
A previously issued FBI missing persons poster said she was working as an English teacher in either Afghanistan or Tajikistan, and had lived overseas for more than a year before vanishing.
[Source: BBC]
