COLUMBUS, Ga. (AP) — A retired teacher bearing a grudge over his mother's treatment at the hospital where she died fatally shot one of her nurses, another employee and a man outside Thursday before police shot him, authorities said.

Charles Johnston, 63, is being charged with murder and will be turned over to police after an overnight stay in another hospital, where he was treated for a shoulder wound, Police Chief Ricky Boren said.

The chief said the gunman arrived at Doctors Hospital with three pistols, including a 9mm automatic and a .38-caliber revolver, and went to the fifth-floor intensive care unit where his mother had been in 2004.

"He blamed a male nurse. He didn't think his mother had been properly cared for," Boren said.