Killed in cold blood

On April 26, 1995, Prince George's County Police Corporal John Novabilski was working an off-duty job as a security guard for a local liquor store. He was in uniform and sitting in his marked patrol cruiser. Suddenly, without any apparent warning or provocation, a man walked up to his car with a MAC-11 assault pistol and opened fire. Corporal Novabilski was shot at least 10 times. The assailant then grabbed the officer's service weapon and ran off.

It wasn't much more than a month later when FBI Special Agent William Christian was taking out a parking lot at the Greenbelt Middle School. Twenty-six other members of the FBI and Prince George's County Police Department were there with him. They were waiting for a man named Ralph McLean, who was wanted for two unprovoked attacks on D.C. police officers.

It was about 1 a.m. The team of investigators was spread out so they wouldn't be spotted. But, McLean had apparently sensed that the police were waiting for him. He silently emerged from the nearby woods and bushes, snuck up on Agent Christian and shot him several times through the driver side window with his MAC-11 assault pistol. The 20-year FBI veteran never had time to draw his gun.

The other officers immediately gave chase and a furious gun battle ensued. When police had their suspect cornered, McLean turned the gun on himself and committed suicide.

When police found McLean, there were two guns lying near his body-the MAC-11 assault pistol and the stolen service weapon that belonged to Corporal John Novabilski. McLean, as it turned out, had assassinated both officers. There was no motive in either attack, except that McLean hated cops and loved to kill.

Victims
 

Corporal John Novabilski
 

Special Agent William Christian

SEX: M RACE: ? TYPE: N MOTIVE: PC

VENUE: Md./D.C.

MO: "Cop hater" who shot lawmen from ambush.

DISPOSITION: Killed resisting arrest, May 29, 1995.

Michael Newton - An Encyclopedia of Modern Serial Killers - Hunting Humans