HALF MOON BAY (BCN) — Sheriff’s deputies in San Mateo County are looking for a Half Moon Bay resident who went missing this morning, sheriff’s officials said.

Jack Spencer, 67, was last seen at about 9:30 a.m. near Main and Poplar streets in Half Moon Bay, according to the sheriff’s office.

A witness told investigators Spencer may have hitched a ride in a red SUV.

He suffers from vision and medical problems so he is considered at-risk.

He is 6 feet tall, weighs 275 pounds and has gray hair. Anyone who sees him has been asked to call 911 or contact the sheriff’s office.