This is an extremely bizarre story just breaking. The below is from the BBC.
Sir Paul McCartney has allegedly fired his long-term publicist after a row broke out at a visit to the David Blaine stunt.
Police are investigating an alleged fracas between Sir Paul and a photographer during the visit at 0100 on Friday.
His publicist, Geoff Baker, admitted he had "stupidly" tipped off the photographer about the visit.
"Then Paul got cross with me and told me I was fired. He was incandescent," Mr Baker said.
Sir Paul came down to the stunt - where illusionist David Blaine is trying to spend 44 days without food suspended in a perspex box - after dining with friends in central London, Mr Baker said.
Mr Baker, Sir Paul's PR representative for 14 years, told London's Evening Standard newspaper Sir Paul did not want to have his photo taken as it was a "private visit".
But Mr Baker tipped off Standard photographer Kevin Wheal, who came down to the site of the stunt, on London's South Bank. Mr Wheal said he approached the star with his camera.
"Then his friends - who seemed more like minders to me - grabbed hold of me and pushed my camera towards the ground," Mr Wheal said.
The photographer also said Sir Paul swore at him and pushed him to the ground.
Police are investigating allegations of common assault form both parties.
"Shortly before 1am today officers near the David Blaine stunt show became aware of a dispute between a group of friends, a photographer and other members of the public," a Scotland Yard spokesman said.
"Following the altercation we have received two counter allegations of common assault.
"The group of friends have alleged that they were assaulted by a man during the argument.
"He alleges that they assaulted him. Statements were taken at the scene. Walworth police are investigating and inquiries continue."