Investigators are releasing the name of the person found dead in central Iowa earlier this week, though questions remain about how he died.

Authorities have now identified the body as found in rural Boone County as 38-year-old Shannon Washburn of Boone.

An autopsy by the State Medical Examiner showed Washburn died of exposure. The body of Washburn was found in a wooded area shortly before 6 P.M. Monday near 115th and Nature Road, eight miles north of Boone. The Iowa Division of Criminal Investigation assisted the Boone County Sheriff’s Department in the case that remains under investigation.