Bruce Pierce, 56, died about 2:45 p.m. Monday in the high-security section of the Allenwood Federal Correctional Complex near Allenwood, Pa. Prison spokesman Mike Castagnola said Pierce was "an average inmate" who held a full-time job and participated in recreational activities.
Castagnola said Pierce had been at the prison for about five years and was in a two-person cell. He had previously spent time at federal prisons in Leavenworth, Kan., and Marion, Ill.
Pierce, who lived in Troy, Mont., before Berg's assassination, was a member of The Order, a group that had plotted to kill the outspoken Jewish talk-show host. Berg, who worked for KOA radio, was gunned down in his driveway on June 18, 1984.
Pierce was convicted of several charges, including violating Berg's civil rights. He was not charged with murder.
When he sentenced Pierce in December 1987, U.S. District Judge Richard Matsch said that Pierce had forfeited his right to live in society:
Matsch gave Pierce a 150-year term on top of the sentence already imposed on Pierce for participating in an Order-directed crime spree aimed at establishing an Aryan bastion in the Northwest.
Anath White, now a writer working in the film and television industry in California, was Berg's producer at KOA.
The Order put Berg in the top three of its hit list, which also included TV producer Norman Lear and Morris Dees of the Southern Poverty Law Center.