CHADRON, Neb. (AP) — Officials are investigating the death of a former Chadron city manager.

Sandra “Sandy” Powell died Sunday.

Dawes County Attorney Vance Haug, acting as county coroner, says early information shows Powell likely was killed in a horse-related accident, suffering head trauma.

Powell was city manager from April 2007 until October 2011. She then went to work for Nebraska Northwestern Railroad.