A man who died during the G20 protests was shoved to the ground from behind by a police officer, video footage showed today.
Ian Tomlinson, 47, is seen walking with his back to a group of police when one officer, apparently unprovoked, lunges at him from behind.
Mr Tomlinson falls heavily to the floor.
The footage, obtained by the Guardian newspaper, was filmed during the protests outside the Bank of England last Wednesday.
It is believed to show the last images of Mr Tomlinson alive.
Moments later he collapsed to the ground and died of a heart attack.
The Guardian said it is handing the video to the Independent Police Complaints Commission (IPCC), which is investigating the death.
A Metropolitan Police spokesman said: “It would not be appropriate to comment while an IPCC investigation is ongoing.”
The footage was reportedly shot by a fund manager from New York who was in London on business.
He told the Guardian: “The primary reason for me coming forward is that it was clear the family were not getting any answers.”
The newspaper said the video would be handed to the police complaints watchdog as part of a “dossier of evidence” which also includes a collection of witness statements and photographs in the aftermath of the alleged attack.
The footage was shot at about 7.20pm at Royal Exchange Passage.
The footage shows Mr Tomlinson, who was not part of the demonstrations, walking away from a group of police officers. Some of them are in riot gear and some are with dogs.
As he walks he has his hands in his pockets and does not appear to speak to any officers or offer any resistance.
When the footage is slowed down, an officer wearing a helmet can be seen apparently hitting Mr Tomlinson from behind with a baton on the leg.
The same officer then uses both hands to shove Mr Tomlinson in the back.
He is propelled forward, landing heavily, and sits on the ground for a few seconds where he remonstrates with police.
None of the officers appears to offer him any help.