BRENTWOOD, Calif. (KRON) — A 17-year-old boy is reported missing, the Brentwood Police Department said in a Facebook post posted Thursday afternoon. London Clay was last seen at his Brentwood home on Monday.

London is described to be 5-foot-11 and 138 pounds with brown eyes and black hair. Police did not provide a location of where he was last seen.

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Police say if you see London or have information about his location, call Brentwood police at 925-809-7911 or 911 if it’s an emergency.

On Thursday, KRON4 also reported an 84-year-old man is missing and last seen at his Antioch home. Police said Gary Simpson has dementia and is considered at-risk.