The family of a 13-year-old Nebraska girl says she has died from injuries after her hair got caught in the engine of an ATV.

Emma Kringle’s family said in a statement through Lincoln’s Bryan West hospital that she died Monday. Lancaster County Sheriff Terry Wagner says Emma had been on life support so her organs could be harvested. Doctors determined Saturday night that she was brain dead.

The accident occurred Saturday afternoon while Emma was driving the three-wheeled ATV near Branched Oak Lake northwest of Lincoln. The ATV crashed when her ponytail got tangled in the engine.

She was riding with her 9-year-old cousin. Wagner says both girls were wearing helmets.

Emma Kringle lived with her family on the southeast side of Lincoln.