Car-racing officials have issued a statement of condolence following the death of a volunteer marshal at the Canadian Grand Prix.
Mark Robinson was killed at the end of the weekend event in Montreal.
In a statement, the president of the FIA world body says the tragedy has affected the racing community deeply.
Jean Todt says that in becoming a marshal Robinson had volunteered his time, knowledge and passion in service of motor sport.
He says if it wasn't for people like Robinson, races could not happen.
The accident occurred just after Sunday's race. The statement from FIA is believed to be the first time the victim's identity has been made public.
It's suspected that Robinson slipped under the wheel of a crane at the end of the Formula One event and was crushed by it. Officials have said he was escorting the crane as it moved a Sauber car, which had not finished the Montreal race.
This wasn't the first death at a Canadian Grand Prix in Montreal.
In 1982, Riccardo Paletti, a rookie driver for the Osella team, was killed when he slammed into Didier Pironi's stalled car on the starting grid.
Other F1 events have also witnessed deaths on the track.
A marshal was killed at the 2001 Australian Grand Prix when Canadian Jacques Villeneuve's BAR Honda car leapfrogged another car and flew into a concrete retaining wall. The crash sent all four tires and other debris across the track and into a fence.
Only six months earlier, a fire marshal at the 2000 Italian Grand Prix died when he was struck by a wheel thrown from a multi-car pileup on the first lap of the race. Other Canadian cities have also had racing-related deaths.
At the 1996 Toronto Molson Indy, an official died in the same crash that killed rookie driver Jeff Krasnoff.
Another track official was killed at the 1990 Vancouver Molson Indy when the car he was pushing on the track was rammed by another car.