A man go-karting in Essex has died after he crashed into tyres surrounding the edge of the track.
The 59-year-old from Brentwood was racing with a group of friends at Indikart Racing, in Grange Way, Colchester, on Monday evening.
He crashed into the tyres and was taken to Colchester General Hospital where he died a short time later.
It is not known whether the man died of natural causes or from injuries in the crash, police said.
Insp Steve Brewer said: "We have examined the kart and carried out a detailed examination of the race track.
"Staff members at Indikart have assisted fully in our investigation and the matter will be referred to the Health and Safety Executive."