Clarkson row: 'Why sack your biggest global star?'
Director General of the BBC Tony Hall has answered questions about the departure of Jeremy Clarkson and said the presenter "crossed a line".
He said that there was a "physical assault and sustained verbal abused against a member of staff".
Clarkson was suspended on 10 March, following what was called a "fracas" with Oisin Tymon in a Yorkshire hotel.