Sebastien Bourdais was angry with Heikki Kovalainen over a "stupid" collision between the pair during the middle stages of the British Grand Prix.
Toro Rosso driver Bourdais broke the front wing of his car after hitting Kovalainen's McLaren in the braking zone at Club chicane, the Frenchman retiring soon after and Kovalainen suffering a punctured tyre as a result.
"He changed his line three times," Bourdais told BBC
TV. "He was inside, outside and inside again. The third time we touched.
"I don't know whose responsibility it is, but it looks a little stupid when you're fighting for 17th position."
Kovalainen, who had only exited the pits a few corners earlier, had let his teammate Lewis Hamilton past on the run into Stowe corner, and said that the defense of his position from Bourdais was far from over the top.
"I moved over to defend, but Bourdais just went into the back of me in the left rear corner," the Finn added.
"I was not distracted [by Hamilton]. He had his tires warmed up and had less fuel, so he was having a run at me into turn seven. He passed me and I was trying to rejoin back in behind him.
"I saw there was someone behind me coming into turn eight. Then I just felt someone touch me and it punctured my left rear tire. Game over."