A man has been arrested after he allegedly taped a road flare to a propane tank and threw it at people outside a Boulder fire station, reports Daily Camera.
Firefighters were able to put down the fire from the device. A firefighter told the Daily Camera that the device potentially could have caused a large explosion.
Mark Stephen Szyperek was arrested on suspicion of four counts of attempted first-degree assault with a deadly weapon, fourth-degree arson and possession of explosives. Firefighters were familiar with Szyperek as he lives near the fire station and had been throwing rocks at the fire station the day prior.