Jenson Button believes his McLaren team-mate Sergio Perez was too aggressive in battling with him during the Bahrain Grand Prix.
The two McLarens made contact on more than one occasion as they battled for points.
One of the incidents left Perez with a damaged front wing, as he clipped the rear of Button's car on the exit of Turn 4.
Button urged the team to make Perez 'calm down' over the radio, but the battle continued and more contact followed.
"I was very vocal on the radio, emotions were running high, but I would say exactly the same again," Button said.
"The racing was great out there. The only person that wasn't was Checo [Perez].
"He was too aggressive, I would say. At 300 km/h, you don't expect your team-mate to come alongside you and bang wheels with you.
"It was a bit of a surprise, and I'm probably not the only one that feels like that.
"That's something you do in karting, and normally you grow out of it."
Perez felt Button had been just as uncompromising with him.
"I think I was as aggressive as he was with me," said the Mexican.
"It was probably too much. We could both have ended our races."
Perez ultimately finished sixth after his best performance for McLaren so far.
Button had to make a fourth pitstop and ended up 10th.
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