A New Hampshire man shot at a two-family home in Saco on Sept. 30 died of a gunshot wound to the head, the Maine Medical Examiner’s Office determined.

The medical examiner also ruled that the manner of death was a homicide.

Michael Burns, 53, of Rochester, New Hampshire, was shot at 26 Nye St., police have said. The man who police believe shot Burns has not been taken into custody and his name has not been released.

Stephen McCausland, spokesman for the Maine Department of Public Safety, said the investigation into the death was continuing, but there were no new developments Tuesday beyond the information released by the medical examiner. McCausland said the term “homicide” only means that one person was responsible for the death of another, but that finding doesn’t affect the investigation into whether a crime was committed.

Two other people were inside the house at the time of the shooting, but police have said neither they nor the shooter was acquainted with Burns, who was shot on an enclosed front porch of the duplex. Police are continuing to try to determine the circumstances of the shooting, McCausland said.