The father of a British IndyCar driver who was fatally injured during a race in the US has described it as a "freak accident".
Justin Wilson, 37, was struck by a piece of flying debris while taking part in the ABC Supply 500 at Pocono Raceway in Pennsylvania last August. Race leader Sage Karam crashed his car into a barrier, scattering debris on to the track in the closing stages of the race.
Drivers then swerved to avoid the debris but Sheffield-born Wilson was hit on the helmet by a piece of Karam's car. He was transferred to a nearby hospital in Allentown, Pennsylvania, but died of his injuries a little over 24 hours after the accident.