Memphis Police Director Toney Armstrong said during a news conference that police were alerted about 9:18 p.m. Saturday that an officer had been shot multiple times.
Armstrong said the officer was transported in critical condition to a hospital, where he died.
In a statement Sunday morning, Memphis Police identified the slain officer as Sean Bolton, 33. Police also said that a civilian had used Bolton's radio to notify police about the shooting. No further details were released.