A North Carolina man has been charged with murder in the fatal shooting of a police officer who was responding to a report of a man with a gun in a supermarket, authorities announced Tuesday.

Tarell Isaac McMillian, 34, has been charged with first-degree murder in the death of Greensboro Police Officer Michael Horan in a Food Lion on Monday, Greensboro Police said in a news release. He was being held without bond.

Police said McMillian also faces multiple charges related to the vehicle pursuit that led to his arrest in Duplin County, about 150 miles (240 kilometers) southeast of Greensboro in the central part of the state. Online court records do not list an attorney who could speak on McMillian’s behalf. Police said they were not seeking anyone else in the investigation.

Horan was responding to the report when he was shot shortly before midday at a Food Lion store in Greensboro. Authorities said Monday afternoon that the circumstances of the shooting remain under investigation. The North Carolina State Bureau of Investigation, the state’s lead law enforcement agency, is continuing the investigation.