Rubens Barrichello has reiterated his condemnation of Heinz-Harald Frentzen following the accident which resulted in the death of a fire marshal at the Italian Grand Prix on Sunday.

After the accident, in which the Jordan driver collided with Barrichello and teammate Jarno Trullo causing a chain reaction which also involved David Coulthard, Johnny Herbert and Pedro de la Rosa, Barrichello called for Frentzen to receive a 10-race ban, calling the German "an idiot".

Yesterday Barrichello again vented his ire, branding Frenzten "unsportsmanlike".

"For me it's quite clear," said the Brazilian. "I was behind Trulli. So basically I came to the left, I chose the left line, and I outbraked him and was running alongside him. And then I felt a big, big bang on my back. So I was so surprised, because I braked so late to outbrake Trulli, that how could someone hit me from behind? What has annoyed me is that Frentzen blamed me for braking early," he said.

"That's ridiculous. I'm upset about Frentzen's comments."

Barrichello added that he was lucky to be alive, explaining that as he sat in his car after his initial accident, the Arrows of Pedro de la Rosa clipped his helmet as it barrel-rolled into the gravel trap following the Spaniard's clash with Johnny Herbert.

"I was lucky that I stayed in the car, because I could have got out, and basically what would have happened was that de la Rosa's car could have cut my body in two," he said. "I was inside my car just waiting for the sand to calm down, and basically I felt a big bang on my head. It was de la Rosa's car that just came and took a bit of my helmet off."

While the fallout among the drivers goes on, the investigation into the death of 30year-old Paolo Ghislimberti, who suffered fatal head and chest injuries when he was struck by a wheel from de la Rosa's Arrows, could drag on for some time.

Officiating magistrate Dr Salvatore Bellomo, who will run the inquiry, arrived at the circuit on Sunday to begin preliminary inquiries.

If Dr Bellomo is satisfied with the evidence presented a conclusive ruling could be delivered within days. However, if he decides there are unresolved issues surrounding the accident he could call for detailed statement from all the teams and drivers involved.

One issue that could be explored is the efficacy of the wheel retainers which under the regulations of governing body the FIA must be fitted to all F1 cars. The sight of all five cars losing wheels in Sunday's accident may cause both the Italian authorities and the FIA, who are carrying out an independent investigation, to question the reliability of the ropes used to hold the wheels in position in the event of an accident.

Sunday's tragic event raises serious questions about the safety of placing chicanes at the end of long fast straights. The revisions to the Rettifilio and Variante della Roggia were made in the name of increasing safety at the Monza circuit but in the end were proved to have the opposite effect.

A number of drivers had raised concerns over the revisions before last weekend, in particular Jarno Trulli, who on several occasions said that Monza had "the most dangerous start in Formula One".