Emergency crews respond to a collision involving a police car and a pedestrian that shut down the intersection of Grand Avenue and Ash Street in Waukegan Thursday evening. | Photo: Geronimo Jesse

A 20-year-old man suffered serious injuries after he was hit by a police squad, which his mother witnessed, as he crossed the street in Waukegan Thursday evening.

The incident happened around 10:45 p.m. Thursday at Grand Avenue and Ash Street in Waukegan.

Waukegan resident Elizabeth Maddox told Lake and McHenry County Scanner she was parked in the Papa Marcos parking lot on the corner of the intersection.

Maddox was picking up her 20-year-old son, who was coming home from class at the College of Lake County in Grayslake.

Her son, Casey Bostick II, takes the Pace bus and gets off at Grand Avenue and Ash Street. He lives a few blocks away.

Maddox said Bostick got off the bus under the street light and proceeded to walk across the street.

Bostick was struck by a black police SUV. “The officer said he didn’t see him,” Maddox said.

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Emergency crews respond to a collision involving a police car and a pedestrian that shut down the intersection of Grand Avenue and Ash Street in Waukegan Thursday evening. | Photo: Geronimo Jesse

Bostick’s mother witnessed her son being hit by the police car.

Maddox said her son was hit “very hard” and suffered a broken elbow, sprained ankle and multiple abrasions on his body.

“[The] impact was so hard that it knocked him out of his shoes,” Maddox said.

Bostick was transported by ambulance to Vista Medical Center East in Waukegan where he was treated.

He has since been released from the hospital but will have to see a surgeon.

Bostick is unable to walk because he cannot put weight on his right foot, Maddox said.

The Lake County Major Crash Assistance Team (MCAT) was called to investigate the crash.

Officials have not released any details on the incident yet.