A Williams mechanic suffered minor injuries and a Force India mechanic with smoke inhalation is being treated at the Barcelona track's medical unit.
One of the Williams team has been taken to hospital, while four Caterham mechanics are being treated at the track's medical unit.A Force India team member is also being treated on the site after suffering smoke inhalation.The incident is believed to involve a Kers unit, which sparked a fuel fire."I was there when [founder] Frank Williams was giving his speech to everyone," said Williams reserve driver Valtteri Bottas."I felt an explosion from behind, somewhere from the fuel area, and everyone ran out quickly."