Police have pledged to take action "where necessary" over a report about Jeremy Clarkson's alleged attack on Top Gear producer.

North Yorkshire Police have requested an internal report by the broadcaster about the incident on the day Clarkson was sacked for his role in a fracas with staff member, Oisin Tymon.

"We have asked the BBC for the report which details the findings of their internal investigation into the matter," said a spokesman.

"The information will be assessed appropriately and action will be taken by North Yorkshire Police where necessary."

Reacting to news of his dismissal, co-hosts James May and Richard Hammond hinted it may be the end of the road for the show's lineup.

May changed his Twitter profile to 'former TV presenter' in the wake of news Clarkson had been dismissed. Meanwhile, Hammond said he was "gutted" and spoke in the past tense of his long tenure on hit motoring show.

Explaining the decision to fire Clarkson. BBC director general Tony Hall said the star "crossed a line" by leaving Tymon in need of hospital treatment.

"I cannot condone what has happened on this occasion," said Hall.

"A member of staff - who is a completely innocent party - took himself to Accident and Emergency after a physical altercation accompanied by sustained and prolonged verbal abuse of an extreme nature.

"For me a line has been crossed. There cannot be one rule for one and one rule for another dictated by either rank, or public relations and commercial considerations."