The identification and business card of former FBI agent Robert Hanssen are seen inside a display case at the FBI Academy in Quantico, Virginia, May 12, 2009.
Hanssen was sentenced to life in prison without parole for spying for the Soviet Union and Robert Hanssen, the former FBI agent who was serving a life sentence for being a Soviet and Russian spy, was found dead in his prison cell Monday.
Hanssen, 79, was found unresponsive at the Federal Correctional Complex in Florence, Colorado, around 6:55 a.m. Monday, a BOP spokesperson said.
Responding staff initiated life-saving measures and requested emergency medical services. Hanssen was pronounced dead by outside emergency medical personnel.The FBI has been notified.