The Civilian Office of Police Accountability (COPA) released the body camera video from the officer who fired the fatal shots, ending a shootout between officers and 18-year-old Trevon Chadwell in the Brighton Park neighborhood on March 25.
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Another video from a cell phone taken moments before the shootout appears to show an innocent man briefly stuck between Chadwell and officers.
The entire incident started at a nearby Home Depot when Chadwell shot a security guard in the head.
Investigators said he ran to a nearby neighborhood where he shot a police officer in the shoulder, which led to that deadly confrontation.
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The family of security guard Kevin Lockett said he's progressing and is currently in a rehab hospital.