Toy black cats were not the only weapons used to try and throw Lewis Hamilton's championship bid off the rails in Brazil a week ago, McLaren boss Ron Dennis has revealed.

Local comedians hurled the cats, a sign of bad luck in Brazil, at not only the British driver at a sponsor press conference, but also his disabled brother Nicholas in a hotel lobby.

"(There were) efforts to disrupt Lewis' sleep, telephone calls, threats of putting an all-night samba band into Lewis' hotel, all sorts of silly things," Dennis, 61, is quoted as saying by The Times.

"But you smile, you don't waste energy on it and just get on with the job," he added.

Source: GMM