Long prior criminal history.
Via Heavy:
Nicholas Glenn was identified as the 25-year-old gunman who shot six people, including a police sergeant ambushed in her squad car, in a deadly rampage through the streets of Philadelphia, according to NBC Philadelphia.
The gunman – who police said acted alone – had penned a letter expressing his hatred for police officers, said Philadelphia Commissioner Richard Ross.
The chaotic sequence of events started with the gunman’s ambush and attempted assassination of police Sergeant Sylvia Young in her squad car, and continued throughout the Philly streets before ending in the gunman’s own death during a gun battle.
Along the way, he also shot four civilians, killing a 25-year-old woman sitting in a car, shooting her seven times in the torso after targeting her randomly, said CNN.