Jenson Button was critical of Felipe Massa after qualifying for the Monaco grand prix.
With Fernando Alonso already out of the session due to his practice crash, the other Ferrari could also now be penalised by the stewards for the incident that occurred in the final ’Q3’ shootout for the top ten grid placings.
McLaren’s Button, the world championship leader, had to abandon his first timed lap when he encountered a slow-moving Massa in the final Anthony Noghes corner.
"I don’t know what he was doing," the Briton told the BBC.
"There were only ten drivers on the track so it should have been easy (to get out of the way)," said Button, adding that the Brazilian "blatantly slowed me down".
During qualifying, former grand prix driver Anthony Davidson spotted Button also being held up by Sauber’s Pedro de la Rosa.
"I would be furious if I was Jenson Button - he totally held him up," said the British radio commentator.