just did a press conference update;
"He's been given an artificial coma.
"His situation is considered to be critical.
"He was operated on only once.
Professor Payen continued: "We can say he is fighting for his life. We judge him to be in a very serious situation. We cannot tell what the outcome will be yet. We are working hour-by-hour but it's too early to say what is going to happen and to have a prognosis.
"We think his helmet did help, without a helmet he wouldn't be here now."
The news conference has now come to a close, with doctors saying they hope to be able to give a further update later today.