NORTH COAST, Calif. — The Humboldt County Sheriff’s Office is investigating the discovery of human remains over the weekend.

On Saturday, July 8, at 7:53 p.m., the Humboldt County Sheriff’s Office Emergency Communications Center received a call regarding skeletal remains found by California Department of Fish and Wildlife biologists in the Mattole River near the Ettersburg bridge.

A Humboldt County Sheriff’s deputy responded to the scene and took custody of the remains, which were identified as a human jawbone or mandible. No additional remains were located.

On Tuesday, sheriff’s deputies are conducting a ground search of the surrounding area in an attempt to locate additional remains.

Identification of the remains has not been made at this time.

Anyone with information about this case is encouraged to call the Humboldt County Sheriff’s Office at 707-445-7251 or the Sheriff’s Office Crime Tip line at 707-268-2539.