Deputies responded at about 1:40 a.m. to a report of a suspicious circumstance in the area of Sheila Avenue and Prom Drive, between the cities of Morgan Hill and Gilroy, sheriff's Sgt. Rick Sung said.
Deputies found a body on a ridge when they got to the scene and secured the area for investigation, Sung said. They said the the body is a man but have not yet determined his identity.
Detectives are interviewing the man who reported the discovery.
Bay City News contributed to this report.