HALF MOON BAY (CBS SF) — San Mateo County sheriff’s officials are continuing a search Tuesday for a man who was last seen Monday entering the water at a Half Moon Bay beach where a missing man’s parked vehicle was found nearby.

Around 1:30 p.m. Monday, a witness reported seeing a man entering the water near Dunes Beach located on Young Avenue, according to the sheriff’s office.

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The witness reported that the person had been swept out to sea by ocean currents and never came out of the water, sheriff’s spokesman Sal Zuno said.

The report prompted an extensive air and sea search involving a helicopter, two lifeboats and various law enforcement units. The search continued until about 7 p.m., according to the U.S. Coast Guard.

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Around 11 p.m., the sheriff’s office then received a call reporting that Michael Dwyer, 25, of Brisbane, had not returned home after a visit to the beach. California State Parks officials located Dwyer’s 2004 Jeep Wrangler parked near Half Moon Bay State Beach’s Venice Beach, sheriff’s officials said.

Sheriff’s officials cannot confirm the man seen entering the water is Dwyer and are continuing to search on land for the vanished swimmer, according to Zuno.

Anyone with information about Dwyer’s disappearance or Monday’s incident is asked to contact the San Mateo County Sheriff’s Office at (650) 363-4911. Callers who wish to remain anonymous can call (800) 547-2700.

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