Authorities say a teenager whose body was found at Cheyenne's East High School apparently died from exposure in temperatures that dipped to 10 degrees Fahrenheit, after wandering the school grounds for at least two hours.

The Wyoming Tribune Eagle reports that Police Capt. Mitch Maxwell says Andrea Battle crashed her car near the school.

Surveillance video shows battle running from her car after the early Thursday December 1st accident and wandering the school grounds.

Authorities say marks on her fingers indicate that she may have been scratching at a door.

A maintenance worker discovered her body at 10:15 a.m. Thursday.

Police and Battle's father searched had searched for the teen.

An autopsy indicated no foul play.

Toxicology reports are expected in about a month.

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