 In 1980 , chief agent John Douglas , working with agents in the FBI 's Behavioral Sciences Unit , issued a psychological profile of the unidentified bomber which described the offender as a man with above @-@ average intelligence with connections to academia . This profile was later refined to characterize the offender as a neo @-@ Luddite holding an academic degree in the hard sciences , but this psychologically based profile was discarded in 1983 in favor of an alternative theory developed by FBI analysts concentrating on the physical evidence in recovered bomb fragments . In this rival profile , the bomber suspect was characterized as a blue @-@ collar airplane mechanic . A 1 @-@ 800 hotline was set up by the UNABOM Task Force to take any calls related to the Unabomber investigation , with a $ 1 million reward for anyone who could provide information leading to the Unabomber 's capture . 
