State police in Maine say a passenger in a car fatally shot his mother before shooting at passing vehicles, killing another motorist and injuring two others, then dying by suicide.

Maine State Police Col. William Ross said Davis was experiencing a mental health crisis before the incident, which resulted in the deaths of the suspect’s mother and a woman who worked at two elementary schools in the area.

Maine State Police officials say the suspect ultimately shot and killed himself, leaving three people dead in total.