A former CIA officer pleaded guilty Tuesday to disclosing the name of a covert CIA operative and admitted to disclosing information that revealed the role of another CIA employee in classified activities.

John Kiriakou, 48, of Arlington, pleaded guilty in federal court in Alexandria to one count of intentionally disclosing information identifying a covert action.

As part of the plea agreement, Kiriakou and federal prosecutors agree to a sentence of 2 1/2 months in prison. Sentencing is scheduled for Jan. 25, 2013.

Kiriakou admitted to leaking the identity of a CIA employee and to lying to the CIA's publication review board about a book he was writing, prosecutors said.

Kiriakou was a CIA intelligence officer between 1990 and 2004, serving at headquarters and in various classified overseas assignments.