Mark Webber pointed the finger at Jean-Eric Vergne at the Chinese Grand Prix on Sunday after the Australian was hit with a grid penalty for the next race in Bahrain following a collision between the pair.
Webber, who failed to finish in Shanghai after losing a tyre soon after, was hauled before race stewards, capping a dreadful weekend for the 36-year-old in which he started the race in the pit lane after a fuel problem in qualifying.
The Red Bull driver will drop three places on the grid in Bahrain next weekend.
Explaining his attempted move on the Toro Rosso that caused the prang, Webber said: "I was coming from a reasonable distance behind, Jean-Eric was really wide but, when we came close to the apex, he wanted to hit it, which he is entitled to do.
"But by then, I was committed to the inside and the incident happened," added Webber, whose car was damaged at the front, forcing him to pit.