A body that washed up at Stinson Beach Monday was identified Thursday as the earthly remains of a San Francisco man known to spend time in the area.

The body of 50-year-old SF man Ralf Hilty was discovered in the surf line near the 300 block of Stinson Beach's Seadrift Road on Monday, August 31.

According to Marin County Coroner's Office Lieutenant Keith Boyd, his office responded to the scene at 12:36 p.m. After National Park Service lifeguards retrieved Hilty's remains, coroners took custody of the body. At the time, the Marin Independent Journal reported that it was "unclear whether the man suffered traumatic injuries," and said that an autopsy was pending.

Boyd says today that Hilty was known to spend time in the Marin Headlands, but could not confirm the cause or manner of his death as of Friday morning.

The case remains under investigation, Boyd says, by the coroner's office, the Marin County Sheriff's Department, and investigators with the Golden Gate National Recreation Area.