British tech tycoon Mike Lynch is among the six people missing after a luxury yacht sank off the coast of Sicily in the early hours of Monday morning.

The 56m (183ft) vessel was carrying 22 people - 10 crew and 12 passengers - including British, American and Canadian nationals. Emergency services rescued 15 people, including a one-year-old British girl. Local media reported the yacht, sailing under the name Bayesian, sank after encountering a heavy storm overnight that caused waterspouts, or rotating columns of air, to appear over the sea.

Mr Lynch, known by some as "the British Bill Gates", co-founded software company Autonomy, which was later bought by tech giant Hewlett-Packard for $11bn (£8.6bn).