Robert Mark Schaaf, 58, of Mill Valley, California, was last seen on December 3, 2016. He is described as a Caucasian male with brown hair, 5 feet 8 inches tall and about 150 pounds. At the time he disappeared he was wearing a plaid jacket with a gray hood, a blue T-shirt, and jeans.

There have been no significant developments or public clues about his whereabouts since he was reported missing. NamUs lists his disappearance and the case remains open; authorities continue to encourage anyone with information to come forward. Schaaf’s family and the local community are still seeking answers.

If anyone knew Robert, saw him around Mill Valley in early December 2016, or has information about his movements that day, please share what you know with investigators.