Stewards in Shanghai are examining new evidence from the Japanese GP concerning Hamilton’s driving behind the safety car.

Hamilton was leading behind the safety car when Vettel ran into the back of Webber's car, putting both out of the race.

Video footage posted on Utube appears to show Hamilton  moving to the right of the track and braking just before  the accident.

Webber : "It definitely contributed to Sebastian hitting me up the back because he wasn't doing what he was supposed to be doing (behind the safety car), clearly,"

Vettel was penalised for his part in the accident and is due to drop ten places on the grid for Sunday's Chinese Grand Prix. Vettel: “As a human being you react to movement ... I saw Lewis move far to the right and thought he was coming to a stop... I obviously did not plan to ruin both of our races."

Prior to the incident, Hamilton had radioed his team to ask them to tell Red Bull to get Webber to drop back, as he felt the safety car was struggling to keep ahead of the pack in the difficult conditions.

Stewards are due to reconvene this  afternoon in Shanghai to reach a verdict on the matter.