An HRT mechanic is not seriously injured on Sunday despite a terrifying incident during the Italian Grand Prix.

Video footage has emerged of a German mechanic called Marcel being thrown violently to the ground by Sakon Yamamoto's car as the Japanese left the pits at Monza.

The mechanic was adjusting Yamamoto's radio when the lollipop-man let the driver go too early.

HRT said Marcel never lost consciousness as he was taken to the medical centre.

"The situation is under control and we are waiting for more information," added the Spanish team.

More information emerged in recent minutes thanks to former HRT race driver Karun Chandhok, who visited Marcel in the medical centre.

"Marcel the radio man is talking and stable awaiting more scans," said the Indian.