FLORENCE, Colo. (KRDO) - The Colorado Bureau of Prisons (CBP) confirms that an inmate at the United States Penitentiary (USP) Florence was assaulted around 10:30 a.m. on Oct. 4.

Robert Hanssen, notorious FBI agent caught spying for Moscow, dies in prison Hanssen received payments of $1.4 million in cash and diamonds for the information he gave the Soviet Union and Russia.

An inmate at the United States Penitentiary in Florence is dead. The Department of Justice says Theodore Matthews was found unresponsive early this morning. He was 43 years old.

Courtesy photos. In January 1995, the country's most secure prison—United States Penitentiary, Administrative Maximum Facility (ADX Florence)—opened in Florence, Colorado.