PHILADELPHIA, PA. – A deadly shooting rampage took place in Philadelphia overnight Friday. The suspect killed one person, wounded five others and left a ‘rambling’ note expressing hatred for cops.

According to Police Commissioner Richard Ross, the note was barely lucid and ranted about law enforcement. It was found at the scene in an envelope addressed “Doomed People.”

Ross said Nicholas Glenn, 25, had a 9mm Ruger, at least three magazines, and a plastic bag with 13 to 15 live rounds, ABC11 reported. He was well-known to police as he had been arrested 16 times in the past, according to Fox29 report.

“Obviously, he was hell-bent on hurting a lot of people,” the commissioner said at a news conference. “We aren’t absolutely clear as to why.”

“This rambling suggests that he clearly was trying to target a police officer, as he did … so it just kind of makes it very clear to us what he was out there to do,” he said earlier Saturday.

According to FoxNews, the shooting started at around 11:20 p.m. in West Philadelphia, a few blocks from the University of Pennsylvania campus. Glenn walked up to the car occupied by Sgt. Sylvia Young, 46, a 19-year veteran of the force. He opened fire without saying a word. Out of 15 shots or so, Young was struck eight times and her weapon was disabled due to two rounds that struck it. Some of the shots were deflected because of her body armor.

Glenn tried to assassinate Young but it was “absolutely miraculous” she survived, Ross said.

Other officers heard the shots and they pursued Glenn who then fired five times into a bar, hitting a security guard in the leg. Afterward, he grabbed a woman and used her as a human shield before shooting her in the leg.

Glenn was not yet done. Next he fired 14 rounds into a car hitting a man and a woman in the chest. The unidentified woman, 25, was hit seven times and pronounced dead just before 2 a.m. Saturday, police said.

Glenn was chased into an alley by two police officers and a retired cop, Eddie Miller, 56, who now works for the University of Pennsylvania police force. The shooting ended when Glenn was cornered and police were victorious during a shootout with him. Glenn was killed after firing a total of 51 rounds during the entire episode.

Miller suffered gunshot wounds in the pelvis and right ankle.

Both Miller and Young were in stable condition Saturday at Penn Presbyterian Hospital, as were the three unidentified civilians who survived the gunfire police said.

“She’s in good spirits given what she’s been through,” Commissioner Ross affirmed of Officer Young. He also said she had to “pretty much lean over in the passenger seat to try to shield herself from as many rounds as possible.”

“This is a dangerous job, it always has been,” Ross said Saturday, “this is a tough time in policing for a lot of reasons.”