WASHINGTON  –  A spokesman for the State Department says two contract employees have been fired and a third disciplined for inappropriately looking at the passport file of Democratic Sen. Barack Obama’s passport file.Spokesman Sean McCormack Thursday night confirmed instances of what he called “imprudent curiosity” by the State Department employees.

McCormack said the department itself detected the breaches, which occurred separately on Jan. 9, Feb. 21 and March 14.

A spokesman for Obama’s presidential campaign called for a complete investigation. The spokesman, Bill Burton, also demanded to know who looked at the file and why, and why the State Department did not reveal details of the security breach until now.