David Paul Hammer, a convicted murderer who was imprisoned with McVeigh at the United States Penitentiary, Terre Haute, has alleged that McVeigh told him details of the Oklahoma City bombing that contradict the account related in court. According to Hammer, McVeigh claimed to have been working as a deep cover operative for the US Department of Defense, having infiltrated ARA and participated in several of the group's bank robberies. McVeigh is further alleged to have indicated Strassmeir and several others at Elohim City were similarly government agents involved in surveillance of extremist elements of the American far-right.[11]