GILLETTE (WNE) — A 21-year-old woman was found dead at an oil field location off Buffalo Cut Across Road about 40 miles southwest of Gillette on Wednesday morning.

A 38-year-old man called 911 to report finding the body of Jade Ommen of Gillette early Wednesday.

Deputies believe that somehow she became trapped between a car door and the frame of an oil field building, was held against it and then was crushed to death, Undersheriff Quentin Reynolds said.

Reynolds said he thinks that she got out when the vehicle was still in reverse then it rolled and trapped her.

An autopsy was conducted Wednesday. Coroner Paul Wallem said Ommen died from mechanical asphyxia sometime late Tuesday night.

No foul play is being suspected. The case remains under investigation.