Deputy U.S. marshal guilty of leaking secrets to mob

A deputy U.S. marshal has been convicted of leaking secret information to the mob about a witness in a federal organized crime investigation.

Deputy marshal John T. Ambrose also was acquitted Tuesday of two charges of lying to federal agents.

Prosecutors say it was the first time in the 39-year history of the government's witness security program that its secrecy has been deliberately violated.

The 42-year-old Ambrose sat expressionless and stared straight ahead as the 11-member jury returned its verdict following almost three days of deliberation. One juror was dismissed after becoming ill.

Prosecutors say they realized there was a leak when they heard two mobsters in a prison visiting room talking about having a "mole" inside federal law enforcement.