Authorities released body-worn camera footage that shows an officer making a split-second decision to fire a single shot that killed 13-year-old Adam Toledo after the boy is seen holding a handgun at the end of a foot chase, according to police.

Police say what was in Toledo's hand is a gun that was later recovered from behind the fence where the chase ended.

Prosecutors, in charging a 21-year-old man who was with Toledo at the beginning of the police encounter in the early morning hours of March 29, said the gun recovered a few feet from the boy's body matched shell casings located where police were summoned moments earlier, and that Toledo's hand and gloves dropped by the older man had tested positive for gunshot residue.

Body-worn camera videos were released by Chicago's Civilian Office of Police Accountability, the police oversight agency that reviews incidents in which an officer fires a department issued handgun. Documents released by COPA identify the officer who fired his weapon as Eric Stillman, who is 34 years old. The Chicago Police Department also released a video compilation of surveillance footage from a nearby school and church.