Autopsies reveal that the cause of death for superyacht victims was "death by confinement," according to a report.

Autopsies have reportedly revealed that four of the seven people who died in the sinking of the Bayesian superyacht last month off the coast of Sicily passed away after being trapped alive inside the ship's cabins and suffocated.

According to La Repubblica, forensics results reveal that New York City lawyer Chris Morvillo, his wife Neda, Jonathan Bloomer, chairman of Morgan Stanley's London-based investment banking subsidiary, and his wife Judy all died due to "death by confinement."

According to the Palermo Institute of Forensic Medicine, the four individuals who were believed to have "dry drowned" had been inhaling oxygen in a tight air bubble until it ran out, despite not having any water in their lungs, trachea, or stomach.

On Aug. 19, four victims and tech entrepreneur Mike Lynch, who had organized a yacht trip to celebrate a recent legal victory, were discovered in a cabin on the port side of the Bayesian after it capsized and sank within 16 minutes of being hit by a predawn storm.

Hannah, Lynch's 18-year-old daughter, was discovered in the next cabin on the port side of the hull. According to La Repubblica, Lynch's wife tried to save her husband and daughter, but as the boat rocked, she cut her feet on glass and fell to the ground. She was unable to walk for a week due to the injuries.

The ship capsized on its port side, and as the oxygen supply dwindled, the air pockets filled with carbon dioxide, resulting in the fatalities of the passengers.

The wreck was immediately next to Recaldo Thomas, the ship's cook.

Scheduled for Friday are autopsies on the bodies of Lynch, his daughter, and Thomas, according to La Repubblica.

Officials believe the yacht was hit by a waterspout, a tornado over water, near Porticello where it was anchored.

The Bayesian rescued 15 people, including Lynch's wife, from the 184-foot British-flagged luxury yacht.

Lynch had Morvillo as one of his U.S. lawyers in a fraud case concerning the 2011 sale of Autonomy to Hewlett-Packard for $11 billion. The deal turned sour due to allegations that Lynch had inflated Autonomy's value. Morvillo was acquitted in June.

The captain and two crew members are being investigated by prosecutors for possible responsibility in the sinking of the ship, but the cause of the sinking is still unknown.

The manufacturing company's CEO, Giovanni Costantino, has attributed the yacht's destruction to a series of "inexplicable, irrational mistakes" made by the crew.

Reuters reported that Costantino stated that the yacht's crew made a "terrible blunder" by not being prepared for the storm, which was forecasted in shipping reports. The passengers should have been alerted and instructed to gather at a safety location as the ship took precautions such as raising the anchor, the CEO explained.

Constantino ruled out design or construction flaws as reasons the ship sank, stating it was unlikely after 16 years of trouble-free navigation, including in more severe weather than Bayesian encountered this week.

The CEO said that the passengers should have been called out of their cabins and assembled at a safety point as the ship was preparing for the storm by pulling up the anchor, instead of blaming the yacht's crew for the "incredible mistake" of not being prepared for the storm, which was included in shipping forecasts.

Costantino declared that doors and hatches should have been closed, and the keel should have been lowered to increase stability, among other safety measures.

This report was contributed to by Greg Norman, Stephen Sorace, Greg Wehner of Planet Chronicle, and The Associated Press.