Formula 1 driver Michael Schumacher's traumatic brain injuries—sustained during a skiing accident last year—were caused by a helmet-mounted GoPro camera, a French journalist in contact with the family said this week.

F1 commentator Jean-Louis Moncet told a French radio station that he's been in contact with Schumacher's son, Mick.

'The problem for Michael was not the hit, but the mounting of the Go-Pro camera that he had on his helmet that injured his brain," Moncet said on the show.

Investigators believe the camera mount may have caused his helmet to shatter on impact. According to the Telegraph:

"The helmet completely broke. It was in at least two parts. ENSA analysed the piece of the helmet to check the material, and all was OK," said a source close to the investigation.

"But why did it explode on impact? Here the camera comes into question. The laboratory has been testing to see if the camera weakened the structure."

Schumacher spent six months in a medically-induced coma after the skiing accident last December. Family members have told the media that the driving legend is "waking up very slowly" in a medical suite installed in his home in Switzerland.