A cameraman was taken to the medical centre at the Nurburgring after he was struck by a flying wheel during the German Grand Prix.
The right-rear tyre of Mark Webber's Red Bull went flying off during a pit stop on lap nine and hit the cameraman.
The Australian went in for a routine change of tyres, but there were problems and he was released without the wheel being secured properly. The wheel went flying in the air and knocked the cameraman down.
He was immediately taken to the medical centre for treatment and BBC Sport's Jennie Gow reported: "I have spoken to the doctor who says he has some chest pain and concussion."
The FIA later released the following statement: "Paul Allen was hit on the left hand side. Remaining conscious 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 provied as soon as it becomes available."
Webber was told to return to the pits after the incident, but he later returned to the race after the Red Bull mechanics managed to fix the problem.
Race Day At The Nurburgring