Police are trying to confirm the identify of a man who disappeared Thursday after he went swimming near the Pacifica Municipal Pier and never came out of the water.
At 2:17 p.m., police received reports of a person needing assistance in the water off Sharp Park Beach, about 100 yards south of Clarendon Road.
When officers arrived, two separate groups said they saw two men and a woman on the beach who seemed to be drunk, police Capt. Dave Bertini said.
Witnesses saw one man go into the water and play in the waves, but a wave knocked him down. He never resurfaced.
One of the man's friends swam out to look for him but couldn't find him, Bertini said. The two friends then walked away and told the nearby parties to call 911.
When police arrived, they began a search and rescue operation with the North County Fire Authority and the U.S. Coast Guard.
The Coast Guard sent a helicopter and two boats to comb a 45-square-foot area, Bertini said.
The search lasted about six hours, and crews used computer models to identify areas where a body could have gone.
Officers were unable to locate the two friends, but police received several anonymous calls after the media released reports of the incidents Thursday night, Bertini said.
Friday morning, officers interviewed a woman who they believe was one of the people with the man when he disappeared.
Once police are able to confirm the identity of the victim, he will be put in a missing persons database, Bertini said.
Pacifica police are still monitoring local beaches in case the body washes up, but official search and rescue operations have been suspended indefinitely.
The department has also notified park police to keep an eye on Mori Point, a Golden Gate Parks and Recreation area where bodies sometimes wash up, Bertini said.
The victim does not appear to be a Pacifica resident, he said. His friends will not face any repercussions for leaving the area because California law does not require witnesses to report incidents.