SYRACUSE, N.Y. (AP) — Police say a woman and three children were found dead in an apparent murder-suicide in a rental car in upstate New York.

Syracuse Police Chief Kenton Buckner says the driver of a tow truck called to remove an overdue rental car from a driveway Sunday afternoon discovered the unresponsive woman and children inside and called 911.

Emergency responders determined the car's occupants were dead. Buckner says authorities are treating the event as a murder-suicide but details were not released.

Syracuse police urged anyone with knowledge of the incident to contact authorities.

Police did not release the ages of the children or their relationship to the woman.