A coroner and police are trying to figure out how a 17-year-old Pennsylvania girl died in a car early on the day she was supposed to graduate from high school.
The Westmoreland County coroner says no signs of a "natural disease" were found during an autopsy of Laura Elizabeth Hoover. She was a senior at Burrell High School, about 25 miles northeast of Pittsburgh.
Her body was found in a car that came to rest against a tree in on neighbor's property about 1 a.m. Thursday. There's no sign she was injured when the vehicle apparently drifted off the road. Toxicology results from her autopsy won't be available for weeks.
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The Burrell School District honored the girl with an empty seat decorated with flowers at Thursday evening's graduation.