The sport's chief said: "We want fair play at all times. Hard and close racing, yes, but fair play, too, without drivers being put in danger.
"The wider world is watching and awaiting the outcome of what has turned into a great championship. We don't want it spoiled and we will crack down on any dirty tricks."
This morning, Red Bull driver Mark Webber denied saying Hamilton could kill somebody if the McLaren team leader persisted with making marginal overtaking manoeuvres like the one at the first corner in Japan last Sunday - a move which saw outgoing world champion Kimi Raikkonen run off the road.
But the Australian, an influential director of the Grand Prix Drivers' Association, admitted that Hamilton's overambitious move on Raikkonen had raised concerns which he will discuss with F1 race director Charlie Whiting at a briefing later this evening.
