Five bodies were found on Wednesday aboard the sunken wreck of a yacht belonging to the wife of British tech magnate Mike Lynch, with one still missing.

The identities of the victims were not immediately given by the authorities.

Rescue crews brought four body bags ashore into port at Porticello. Salvatore Cocina, head of the Sicily civil protection agency, said a fifth body had been located. Divers at the scene said they would try to recover it on Thursday while continuing the search for the final missing person.

Rescue officials have been looking for six missing people, including Lynch, his 18-year-old daughter and Jonathan Bloomer, a non-executive chair of Morgan Stanley International.

The British-flagged Bayesian, a 56-metre-long superyacht, was carrying 22 people, and was anchored off the Sicilian port of Porticello, near Palermo, when it capsized during a fierce storm on Monday.

Lynch, 59, was one of the U.K.'s best-known tech entrepreneurs and had invited friends to join him on the yacht to celebrate his recent acquittal in a U.S. fraud trial.

Specialist rescuers have been searching inside the hull of the sunken yacht for the past two days. The victims were believed to have been trapped in cabins, which have proved extremely hard to get to, with divers only able to stay in the vessel for eight to 10 minutes before having to re-surface.

Separately, the coast guard deployed a remotely operated vehicle that can operate up to 300 metres deep, to scan the seabed and take underwater pictures and videos that it said may provide "useful and timely elements" for both the search and the investigation into the cause of the sinking.

Fifteen people survived, while the body of the onboard chef, Canadian Antiguan national Recaldo Thomas, was found near the wreck hours after the disaster. A report in Antiguan media said Thomas, 58, had lived in Antigua for about three decades after growing up in the Calgary area.

The coast guard has been questioning survivors, including the captain of the Bayesian, and passengers on the yacht that was moored next to it who witnessed the ship going down, judicial sources said.

No one is under investigation at the moment, sources added.

WATCH l Explaining the challenges the scuba divers face:

Sicily superyacht rescue: What divers are up against | About That

Rescue efforts are underway in Sicily, after a luxury superyacht carrying 22 people was hit by a violent storm, causing it to suddenly capsize. Lauren Bird explains the challenges that divers face in finding the six missing passengers, and breaks down why time isn't on their side.

Nearby yacht unaffected by storm event

Lynch built the U.K.'s largest software firm, Autonomy, which was sold to HP in 2011, after which the deal spectacularly collapsed, with the U.S. tech giant accusing Lynch of fraud, resulting in a lengthy trial. Lynch was acquitted on all charges by a jury in San Francisco in June.

The other missing passengers were Bloomer's wife, Judy, Clifford Chance lawyer Chris Morvillo and his wife, Neda Morvillo. Morvillo represented Lynch in the San Francisco trial, while Bloomer was a character witness on his behalf.

Experts have been at a loss to explain how a large luxury vessel, presumed to have top-class fittings and safety features, could have sunk within minutes, as recounted by witnesses. The yacht anchored next to it was unharmed by the tempest.

The Bayesian, which was owned by Lynch's wife, was built by Italian shipbuilder Perini in 2008 and last refitted in 2020. It had the world's tallest aluminum mast, measuring 72 metres, according to its makers.

The captain, James Cutfield, a 51-year-old New Zealander who survived the shipwreck, was a "very good sailor" and "very well respected" in the Mediterranean, his brother Mark told The New Zealand Herald.

Matthew Schanck, chair of the Maritime Search and Rescue Council, a U.K.-based non-profit organization that trains sea rescuers, said the Bayesian was the victim of a "high-impact" weather-related incident.

"If it was a water spout, which it appears to be, it's what I would class as like a 'black swan' event," he told Reuters, referring to a rare and unpredictable phenomenon.

He said he was confident the authorities would "get to the bottom" of what caused the shipwreck, thanks to the accounts of survivors, witnesses and examination of the sunken hull, which did not show any apparent signs of damage.