 Robert Hansen, a former FBI counterintelligence officer who spied for Moscow, was found dead in a maximum security prison in Florence, Colorado on Monday. Hansen 79 has been serving a life sentence since 2002 after pleading guilty to 15 counts of espionage. He had received more than 1.4 million dollars in cash, diamonds and money paid into Russian accounts. His case was investigated by 300 agents, according to BBC. Due to his role in counterintelligence, he gained access to classified information and began sending materials to Moscow in 1985, becoming an FBI officer on 12th January, 1976. The investigation into Hansen was initiated after the arrest of spy Algrik Spyhason Ames in 1994 when the FBI released the classified information was still being leaked. Hansen was caught red-handed in 2001, one month after he began working at FBI headquarters, where hidden cameras and microphones were installed.