Other Chicago Mayor Lightfoot Calls for End to Police Foot Chase after Police Killed 13-Year Old Boy, New Video Shows He May Have Dropped a Gun. April 16, 2021 WGNTV and NY Post 1 New enhanced video shows that Adam was holding an object police say was a gun, and a firearm was recovered near the body at the scene. Assistant State’s Attorney James Murphy said that Adam’s right hand tested positive for gunshot residue.