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Bureau of Alcohol, Tobacco, Firearms and Explosives

For Immediate Release

August 26, 2013

Contacts: Helen Dunkel, Special Agent, PIO

Cell: (925) 202-8135

Bomb Maker Convicted of Murder

SACRAMENTO, Calif. – Paul Moore was convicted in state court announced Colusa County District Attorney John R. Poyner, Colusa County Sheriff Scott D. Marshall, and Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), San Francisco Field Division Special Agent in Charge Joseph M. Riehl.

On December 6, 2011, Paul Moore was arrested on state homicide charges for the July 16, 2011, death of Roberto Ayala as a result of an explosion of a destructive device. On July 16, 2011, an explosion occurred at the Moore Brother’s Farm near Colusa, California. As a result of the explosion, Roberto Ayala, who was working on the farm and near the explosion, died. On August 12 and 15, 2011, the Colusa County Sheriff’s Office received letters claiming responsibility for the construction and detonation of the explosive device. The letter received on August 15, contained a diagram of the explosive device. Based on evidence recovered at the scene of the explosion, it was determined the author of the letters had constructed the explosive device. During the course of the investigation Moore was identified as the author of the letters.

On December 6, 2011, ATF Special Agents and deputies from Colusa and Butte County Sheriff’s Offices served a state search warrant at Moore’s residence and located evidence linking him to the explosive device. Moore was arrested and booked into the Colusa County Jail.

ATF is the federal agency with jurisdiction for investigating violent crime and explosives violations. More information on ATF can be found at