Renault's Fernando Alonso pointed the finger at Ralf Schumacher after the crash which denied him a likely second place at the Monaco Grand Prix.
"I hope they investigate the accident and they take his licence for three or four races. To race with people like this is always difficult.
"It happened to Takuma Sato in Bahrain, to me in Imola and here as well.
"We risk our lives at circuits like this and it's difficult to race with people like that," said Alonso.
The Spaniard accused Schumacher of ignoring blue flags for the first seven corners warning him that there was a faster car trying to get past.
"He slowed down to let me by at the entrance to the tunnel, then got back on the throttle and pushed me wide," added Alonso, whose Renault team-mate Jarno Trulli won the race.
"There's no grip on the outside there, and I lost control. It's extremely frustrating, and cost us a one-two finish."
"Then when we were side by side he went on to the throttle and pushed me into the barrier."
Schumacher, however, protested his innocence.
"He just ran into some dirt. I'm sorry about it but it wasn't at all intentional," he said.
"It's not true that I disobeyed the blue flag. I can understand his frustration but he went too far outside, ran into the dirt and then hit the wall.
"I can understand his being angry. He's rather inexperienced in Formula One and made a mistake.
"It's clear that he would try to place the blame on someone else. Just wait a week and he'll be calmed down."