Force India's race drivers are to be told that what happened in Baku at the weekend was "unacceptable", according to the Silverstone-based team's sporting boss Otmar Szafnauer.
However, Szafnauer is quoted by L'Equipe as saying that both were to blame.
"I would say it's 50-50, or 55-45," he said. "The worst thing you can do is hit your teammate.
"It was tricky because on a circuit with walls, Sergio would otherwise have had room and everything would have been fine.
"So we're going to go over the incident with them and tell them it's unacceptable. They cannot fight each other.
"It's bad enough when you hit another driver, but if it's your teammate, you risk ruining the team's whole race. But they're aware of that - they're intelligent guys."
The championship continues with the Austrian Grand Prix on July 9.