One person has died and three others are missing after a boat carrying more than a dozen passengers capsized and sank in San Francisco Bay near Alcatraz Island on Tuesday. The U.S. Coast Guard has ongoing search-and-rescue efforts for the missing individuals.

The vessel, identified as the Volare, a 50-foot cabin cruiser based out of Stockton, California, was believed to have had 20 adults aboard when it was hit by a wave, causing it to capsize. Authorities stated that the passengers were likely engaged in a memorial service at the time of the incident.

The deceased, an adult male who has not yet been identified, was taken ashore severely injured and pronounced dead after CPR attempts were unsuccessful. Three other passengers were transported to a hospital and are reported to be in stable condition, with expected release later Tuesday.

San Francisco Fire Chief Dean Crispen indicated that while the initial call at 3:30 p.m. local time reported a fire on the boat, authorities have not yet found evidence of a fire. The U.S. Coast Guard, alongside multiple local agencies, deployed rescue swimmers and scuba divers to assist in the operation.

Initial reports from authorities suggested 19 people were on board and two were missing. The number of passengers and missing persons was later revised to 20 aboard and three missing as the rescue and recovery efforts continued.

The incident has prompted a significant response from maritime and emergency services, highlighting the dangers of sudden weather changes and waves in the San Francisco Bay.

Officials are continuing to investigate the exact cause of the capsizing, with the U.S. Coast Guard leading the search for the three missing passengers, which is expected to continue through the night.

This event serves as a stark reminder of the unpredictable nature of sea conditions and the importance of maritime safety protocols, especially for vessels carrying passengers for events.