An Arkansas police officer is dead after a fluke incident in which he was apparently struck by a stray bullet while in his home.

Capt. Joe Baker, of the West Memphis, Arkansas, police said the officer from nearby Forrest City was struck by the bullet at about 3:30 p.m. Saturday afternoon. The officer, identified as Oliver Johnson, was off-duty at the time and not involved in law enforcement activities when he was killed.

An altercation between two groups broke out and shots were fired outside of the officer’s residence, Baker told ABC News. Johnson was not the intended target.

A full investigation is underway.

Johnson lived in West Memphis, Arkansas, just over the Mississippi River from Memphis, Tennessee, but was a police officer with the Forrest City Police Department. Forrest City is located about 40 miles west of West Memphis.