One man died and six people were missing, including British tech entrepreneur Mike Lynch, after a luxury yacht was struck by an unexpectedly violent storm and sank off the Sicilian capital Palermo early on Monday. The 56-metre-long (184-ft) sailboat was identified as the British-registered Bayesian and sank with 22 people on board shortly before sunrise, the Italian coast guard said in a statement. The names of the dead and missing were not immediately released, but a person familiar with the rescue operation confirmed that Lynch was not accounted for. The Italian coast guard said the missing had British, American and Canadian nationality. The 15 people rescued included a one-year-old child.