Italian authorities have launched a manslaughter investigation into the sinking of the luxury yacht Bayesian off the coast of Sicily, resulting in the deaths of a British tech billionaire, his daughter, friends, and a crew member. The prosecutor stated that potential responsibilities could lie with the captain, crew, boat makers, or those overseeing the boat. The focus is on why the yacht sank rapidly, with weather conditions and crew actions under scrutiny. The possibility of a downburst, rather than waterspouts, causing the accident is being considered. The investigation is in its early stages, with the recovery of bodies and search for a black box ongoing. The prosecutor emphasized the need for a thorough inquiry into the actions leading to the tragedy.