A jury found the man who bragged about killing an officer during an armed robbery guilty of first-degree murder Thursday. Antwon Carter shot and killed Chicago Police Officer Michael Bailey outside his own home in 2010 only a few weeks before he was to retire.

Detectives say Bailey, 62, had just gotten off work on then Chicago Mayor Richard Daley’s security detail, reports CBS. He was still in uniform as he returned to his home. As he polished the new Buick Regal that he had bought himself as a retirement gift, Carter allegedly approached him with a gun to try to rob Bailey.

Bailey fired several shots of his own, but was shot three times by Carter.