Lewis Hamilton is one of three drivers under investigation at the Brazilian Grand Prix for being in breach of wet weather tyre regulations.
The championship leader, Takuma Sato and Jenson Button are all accused of being in breach of Article 25.3 of the F1 Sporting Regulations, which states that: "No driver may use more than one set of wet and one set of extreme weather tyres during P1 and P2."
It is not yet known whether the drivers will face any kind of penalty, but the matter is likely to be investigated after the second practice session.
