A decorated Atlanta Police Department officer was shot and killed by a homeowner this week after he allegedly broke into his neighbor's house while off duty.

An Atlanta police officer was shot and killed outside a Douglas County home during what investigators say was an apparent early-morning break-in attempt.

Officers were called out to a townhome community on Oakland Drive in southwest Atlanta just after 12:15 p.m. Investigators say paramedics on the scene declared the victim dead. They have not commented on what led up to the shooting.

A SWAT standoff in Atlanta's Oakland City neighborhood has turned into a homicide investigation and manhunt for the suspected gunman. Police believe an argument between two roommates at the Oakland Park Townhomes on Oakland Drive SW led to gunshots Saturday afternoon.