BLUE ISLAND, Ill. — An investigation is underway after a man was fatally shot by police following a well-being check in Blue Island.

Around 2 a.m. Thursday, police responded to the area of Broadway and Division for a suspicious vehicle and well-being check of a man, identified as 21-year-old William Burruss, of Olympia Fields, who was unresponsive in the driver’s seat.

Upon arrival, police said officers observed an AR-15 pistol on the front passenger seat of the vehicle. Additional officers arrived at the scene as attempts were made to wake up Burruss.

According to police, when Burruss finally woke up and saw the officers, he reached for the front passenger seat.

Police said one officer then fired one round and shot Burruss in the torso area. He was transported to Advocate Christ Medical Center in Oak Lawn, where he was pronounced dead.

Illinois State Police Crime Scene Services responded to the scene to process evidence and the Illinois State Police Public Integrity Task Force has launched an independent investigation.

Many neighbors told WGN News they are shocked by what happened.

“It’s really sad,” said Yelissa Allen. “I heard a little bit of noise, people yelling and stuff, and I’m thinking it’s just a party and then I see the lights and stuff.”

The name of the officer has not been disclosed due to the ongoing shooting investigation.