prosecutors in Italy have opened a manslaughter investigation after a super yacht capsized off the coast of Sicily killing seven people on board Ambrosio cartosio a prosecutor in the town of termin imire said on Saturday that no suspect has currently been identified in the incident seven people including UK Tech Tycoon Mike Lynch were killed in the sinking of the beijan a 56m 184 ft British flagged luxury that went down in a storm early on Monday the vessel was carrying 12 passengers and 10 crew members the public prosecutor's office in terman Imes has filed a case against unknown persons hypothesizing the crimes of negligent shipwreck and multiple negligent manslaughter cartosio told reporters we are only in the initial phase of the investigation we can't exclude any sort of development at present he said investigators are baffled that a yacht deemed un sinkable by its Italian manufacturer perini sank while a nearby sailboat remained largely unscathed