Helena man suspected of threatening to attack Helena Public Schools sentenced to seven and one-half years in prison for illegally possessing homemade bombs, silencer

GREAT FALLS — A Helena man who admitted to illegally possessing homemade bombs and a silencer after being suspected of planning to attack a Helena Public Schools building was sentenced today to seven and one-half years in prison, to be followed by three years of supervised release, U.S. Attorney Jesse Laslovich said.

Logan Sea Pallister, 25, pleaded guilty in January to possession of unregistered destructive devices and to possession of an unregistered silencer.

Chief U.S. District Judge Brian M. Morris presided.

The government alleged in court documents that in May 2022, the Helena Police Department received information from a juvenile girl that Pallister possessed multiple bombs, had access to multiple firearms and had been making threats of committing an attack at a local high school. The person also indicated that Pallister discussed a desire to commit a Columbine-style attack at the high school. Further, Pallister had shown the individual numerous firearms and a large amount of ammunition that he kept in his car and had purchased a black trench coat and the same type of duffle bag used by the shooters in the attack at Columbine High School. Pallister showed the individual a homemade pipe bomb that he said he’d made and retrieved from his car. The individual later reported that Pallister threatened to kill her if she told anyone about what he had shown her. Although Pallister disputed making the threat, the individual reported the incident to law enforcement.

At about 4 a.m. on May 31, 2022, police officers arrested Pallister as he was walking toward his car from his residence. Pallister was wearing a black trench coat, carrying a bag and had eight loaded firearms concealed on his person, including semi-automatic pistols and AR-style rifles equipped with high-capacity magazines. Following Pallister’s arrest, law enforcement searched his car and recovered nine additional firearms, miscellaneous firearms accessories, body armor, trigger modification systems designed to increase the fire-rate of guns, an ammunition canister containing four homemade pipe bombs and an oil filter modified to function as a silencer. In a search of Pallister’s residence, law enforcement located a large quantity of ammunition, additional firearms parts and materials used to make explosives.

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