On Monday, Mark Stephen Szyperek was arrested on suspicion of four counts of attempted first-degree assault with a deadly weapon, possession of explosives, and fourth-degree arson.
Police were called Monday evening to a grassy area just west of the Boulder fire station on 30 street with the reports that a man had taped a road flare to a propane tank, lit it, and threw it at people outside of the fire station.
Witnesses told the police that Mark threw a flaming device at them before firefighters were able to put the device out. Police also spoke with a firefighter who reported that the device was a road flare, taped to a foot-long propane canister. The firefighter said that if the flare hadn't been put out in time, it could have caused a serious and dangerous explosion.
Firefighters and witnesses say that they were familiar with Mark because he lived right behind the station and had been throwing rocks at the station the day before this all happened.
One firefighter says that he overheard Mark saying he was going to kill one of the other people in the area at the time the device was thrown.
Right after the flare was thrown and he took off, Mark was found at a local grocery store and allowed the police to arrest him without resisting.
Mark has prior convictions that include, escape from customer and criminal mischief, trespassing, and pending misdemeanor cases in Boulder County. He is currently awaiting a formal filing charge and remains in custody at the Boulder County Jail on a $10,000 bond.
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