Nurburgring - A Formula One camera man was hit by an errant flying wheel during a pit stop after eight laps of Sunday's German Grand Prix.
The wheel flew off the right rear axle of Australian Mark Webber's Red Bull car, bounced through two garages and hit the camera man, Paul Allen, in the back.
The camera man was treated immediately by medical staff in the pit lane before being transferred to the circuit medical centre.
The sport's governing body, the FIA, added in a statement: "He was treated at the circuit medical centre and then transported by helicopter to Koblenz Hospital.
"The Briton has been kept there, under observation.
"Further information from the hospital will be provided as soon as it becomes available."
Webber, who had been racing in second place, eventually rejoined the race at the back of the field.
The race was then slowed behind the Safety Car after 24 laps on Sunday when a car, without a driver in the cockpit, rolled backwards down the track in front of the oncoming racing field.
The car was the Marussia of Frenchman Jules Bianchi who had jumped out when the backmarkers' machine had suffered an engine failure.
Track staff failed to control it and it slowly rolled, out of control, backwards from its parked position and across the track before stopping after hitting an advertising hoarding.