A hiker discovered a man's body in a remote part of John Henry Johnson Park south of Pittsburg on Thursday, according to the Contra Costa County Sheriff's Office.
The hiker found the body shortly after 5 p.m. and reported it to the sheriff's office. Sheriff's officials said it appears that the body had been there for a long period of time.
The coroner's office took the body and is trying to determine the man's identity and will conduct an autopsy to determine how he died.
Anyone with information about the case has been asked to call sheriff's investigators at (925) 313-2600 or email firstname.lastname@example.org.