Aryan Republican Army Kansas reported that McVeigh and Brescia were frequent associates, while Guthrie bore a distinct physical resemblance to "John Doe Number Two". Timothy McVeigh's sister, Jennifer, also claimed that he had been one of the participants in several, unspecified bank robberies. 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
Timothy McVeigh he considered having them dropped at the site of the memorial where the building once stood, but decided that would be "too vengeful, too raw, too cold." He had expressed willingness to donate organs, but was prohibited from doing so by prison regulations. Psychiatrist John Smith concluded that McVeigh was "a decent person who had allowed rage to build up inside him to the point that he had lashed out in one terrible, violent act." McVeigh's IQ was assessed at 126. According to CNN, his only known associations were as a registered Republican while in Buffalo, New York, in the