[Keilar:] Welcome back. It is still a mystery as to exactly what happened to a scuba diving boat that burst into flames off the California coast as dozens of people onboard slept. The mayday calls came in just after 3:00 a.m. Pacific Time. Thirty-four passengers at this point are still unaccounted for. As CNN's Nick Watt reports, five crew members including captain jumped off the boat and were rescued by Good Samaritans.
[Nick Watt, Cnn Correspondent:] A mayday call just before 3:30 a.m.
[Unidentified Male:] Mayday! Mayday! Mayday! Conception. Platts Harbor. Northside. Santa Cruz.
[Coast Guard:] Vessel in distress, this is Coast Guard Sector Los Angeles on Channel 1-6. What is your position and number of persons onboard, over?
[Watt:] Thirty miles from the mainland just north of Los Angeles, first responders beaten back by the inferno.
[Unidentified Male:] It keeps being extinguished and re-flashing possibly due to the amount of fuel onboard. Unsure why.
[Watt:] Five crew members escaped.
[Captain Monica Rochester, United States Coast Guard:] The crew was actually already awake and on the bridge. And they jumped off. Five people were evacuated aboard a Good Samaritan pleasure craft known as the Great Escape.
[Watt:] One brought ashore on a stretcher, rushed to the hospital, one limping, an injured ankle. Two shoeless and shocked. Thirty-four others who are below decks still unaccounted for. We're told there are numerous fatalities. Listen to the dispatcher on that mayday call asking questions.
[Coast Guard:] Roger, are they locked inside that boat? Roger, can you get back onboard and unlock the boat unlock the doors so they can get off?
[Watt:] We cannot hear the answers and the coast guard has said the boat was in compliance. Bears repeating, 34 still missing.
[Petty Officer Mark Barney, United States Coast Guard:] We are combing the shoreline. We have vessels, two vessels from the Coast Guard station Channel Islands Harbor. We have Coast Guard helicopter air crews. So, we are using everything we have in nearby area to search for these missing 34 people.
[Watt:] The boat sank 64 feet of water just 20 yards from the shore of Santa Cruz Island. The Conception, 75-boat dive boat seen here in video on a previous video had left Santa Barbara Saturday morning. The cause of the fire that destroyed her still unknown. The NTSB is en route and the Coast Guard is working with the vessel's owner, but the priority right now, the fight with hope fading to find any more survivors. And that mayday call came in more than ten hours ago. Now, that boat burned down to the waterline. These, Brianna, are not good signs.
[Keilar:] No, they aren't. Nick Watt, thank you so much on the California coast there. Joining me now is Josh Campbell, former FBI special agent. And there's five survivors, Josh, at this point. What are investigators trying to learn from them right now?
[Josh Campbell, Cnn Law Enforcement Analyst:] Yes, Brianna. These are all witnesses to what occurred here. We know that the NTSB is en route to this location, one of their go teams. They will be questioned. Authorities want to know what took place in the immediate preceding this incident. They want to know if there were any issues that they knew about, perhaps electrical issues and the like. We are told that the vessel was in compliance. We're told that by the Coast Guard. But again, they want to recreate.