At about 12 p.m. deputies received a report that a hiker had come across skeletal human remains.
Deputies responded to the scene and the hiker guided deputies about two miles west of Skyline Boulevard to the skeletal remains.
The remains were located about 100 feet off the trail, deputies said.
While the remains have been identified as human, deputies have not identified the body.
The San Mateo County coroner's office and detectives responded to the scene and are continuing to investigate the incident.