The BBC will not renew the contract of "Top Gear" host Jeremy Clarkson after it was discovered that Clarkson was involved in a verbal and physical attack on a producer for the program, The Guardian reports.

BBC Director-General Tony Hall decided to publish the findings that Clarkson physically and verbally attacked a producer for the show, he said in a statement Wednesday. The investigation showed that the producer had to visit a hospital after the attack.

Hall said that Clarkson has "crossed a line." He said that he took the action to end Clarkson's career at BBC "with great regret."

The investigation led by BBC Scotland boss Ken MacQuarrie found that after a verbal attack on producer Oisin Tymon, Clarkson physically attacked Tymon for 30 seconds.

It was revealed Wednesday that Clarkson may face police action as well. The North Yorkshire police asked the BBC for a copy of MacQuarrie's report.

The report explained the full details of the attack that occurred at the Simonstone Hotel in North Yorkshire after a full day of filming the show in Newcastle March 4.

MacQuarrie said that Clarkson subjected Tymon to "an unprovoked physical and verbal attack." He said Tymon wound up having a swollen and bloody lip.

A witness stopped the attack and Tymon did not try to fight back, according to the report. 

The report adds that Tymon was "shocked and distressed by the incident" and drove himself to a nearby A&E department to be examined for his injuries.

The report also shows that Clarkson verbally abused Tymon on more than one occasion. It details that Clarkson yelled expletives at Tymon and threatened to fire him.

Hall said that Clarkson subjected an "innocent party" to verbal and physical abuse of "an extreme nature."

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

The future of BBC's "Top Gear" could be in jeopardy. The broadcasting company will try to continue the show that has more than 5 million viewers per week.

"The BBC must now look to renew Top Gear for 2016. This will be a big challenge and there is no point in pretending otherwise," Hall said.