Crews were searching for survivors. It was not immediately clear how many people were on the boat, a small, open, outboard-powered craft.

Three people are dead and nine others are missing after a 'panga-style vessel' overturned in Del Mar early Monday, authorities said.

The U.S. Coast Guard intercepted a 15-foot boat carrying four men suspected of being undocumented migrants off the coast of San Diego on Friday.