A convicted felon has been charged with murdering St. Louis, Missouri, 77-year-old retired police captain David Dorn during riots in the city last week.

The St. Louis Police Department announced Sunday that 24-year-old convicted felon Stephan Cannon has been arrested and charged with first-degree murder, first-degree robbery, first-degree burglary, armed criminal action, and unlawfully possessing a firearm after he allegedly murdered Dorn.

On June 2, according to police, Dorn was guarding Lee’s Pawn and Jewelry in St. Louis while riots, fires, and looting broke out. Surveillance footage, police said, shows Dorn arriving at the pawn shop, which had already been looted by Cannon and other men.

That is when Cannon can allegedly be seen on the footage approaching the corner of the pawn shop with a gun, and it is at this time that Dorn was shot, killed, and left on the sidewalk bleeding.

While searching Cannon’s residence, St. Louis police officers recovered a TV that had been looted from the pawn shop that night. Cannon is currently being held without bail.

Dorn had served nearly 40 years with the St. Louis Police Department before retiring in 2007. Dorn also served as police chief in the small town of Moline Acres, Missouri.

John Binder is a reporter for Breitbart News. Follow him on Twitter at @JxhnBinder.