Spanish motorcycling legend Angel Nieto died aged 70 just over a week after suffering a quad-bike crash in Ibiza, MotoGP announced.

"The 13-time world champion — whose superstition always referred to his titles as 12+1 – was a MotoGP legend and a key figure in establishing Spain as a world-beating force in Grand Prix motorcycle racing," the official site of the motorcycling world championship said on Thursday.