London - Thai duty-free billionaire Vichai Srivaddhanaprabha was best known on the sporting front for the fairy-tale success of Leicester City's Premier League title triumph in 2016, but his investment in horse racing was hoped to yield the same results.

Leicester, United Kingdom - Leicester City's charismatic Thai chairman was the subject of growing concerns on Sunday after a helicopter belonging to the billionaire crashed and burst into flames in the stadium carpark shortly after taking off from the club's pitch.