Hockenheim has ramped up security for this weekend's German Grand Prix following a spate of terrorist attacks in the country and Europe.
The Telegraph reports that the sport's regular security contractor is almost doubling its staff for the race, and that the Bernie Ecclestone-led FOM is working closely with Hockenheim promoters.
"Everybody is a bit concerned," the F1 chief executive admitted.
"I can't see what they can do but they're doing whatever they can. Everybody is on alert, especially Germany. The race it not targeted at all."
A Hockenheim circuit spokesman confirmed Ecclestone's claim that the German Grand Prix is not specifically targeted, but said that police and security "will take all necessary and appropriate actions to ensure the safety of everyone attending this weekend's race".
