COLUMBUS, Ohio (AP)  — A disgruntled mail carrier facing dismissal has been charged with aggravated murder for fatally shooting his supervisor at a suburban Ohio post office and with murder for killing a postmaster outside of her apartment complex.

Twenty-four-year-old DeShaune Stewart, of Columbus, was naked during both slayings Saturday morning inside the Dublin post office and at an apartment complex in nearby Columbus, police said.

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Stewart is charged with killing 52-year-old Lance Dempsey at the post office just before 4:30 a.m. Stewart had been scheduled to walk his mail route on Saturday, Columbus homicide Sgt. David Sicilian said.

Columbus police dispatchers received a 911 call around 7:15 a.m. about a man with a gun chasing a woman outside the apartment complex, about 4 miles (6 kilometers) from the post office. Patrol officers arrested Stewart and recovered a handgun after he tried to run away.

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The body of the postmaster, Ginger Ballard, 53, was found lying between two vehicles. A police affidavit filed with the murder charge in Franklin County Municipal Court said Ballard died instantly of blunt-force trauma to the head after being thrown to the ground, The Columbus Dispatch reported.

Police earlier described Ballard as a postal inspector. The Dispatch has reported that documents found online refer to her as the Dublin postmaster.

Sicilian described the slaying to reporters earlier Saturday as “workplace violence” involving a suspect who retaliated against two people involved in his pending dismissal from the U.S. Postal Service.

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