The policing of the G20 summit in London has been called into question after an allegation of manslaughter and another of assault emerged.
The Independent Police Complaints Commission is investigating the contact Ian Tomlinson had with police after a second post-mortem examination found that he died of an abdominal haemorrhage. It is also investigating why a woman was struck by an officer.
Footage on YouTube appears to show a woman, Nicky Fisher, 35, from Brighton, East Sussex, being hit in the face by a police officer after swearing at him. He also apparently strikes her on the leg with his baton.
The IPCC says it will investigate. A statement from the Met says the apparent actions of the officer raised "immediate concerns".
The police sergeant seen hitting a woman in the face is suspended from duty.
Metropolitan Police Commissioner Sir Paul Stephenson announces Her Majesty's Chief Inspector of Constabulary (HMIC) will review policing tactics, including "kettling".
Sir Paul said: "I have already expressed my concern that the video footage of some police actions are clearly disturbing and should be thoroughly investigated."
A total of 145 complaints have been made following clashes between police and protesters at the G20 summit.
They include 70 claims of excessive force by alleged victims or witnesses to brutality, the Independent Police Complaints Commission said.
A second post-mortem examination finds Ian Tomlinson died of abdominal haemorrhage, not a heart attack.
A Metropolitan police officer has been interviewed under caution for the offence of manslaughter, the IPCC says.
LOCATION OF IAN TOMLINSON AND G20 PROTESTS IN CITY OF LONDON
1. Protests at Bank Junction outside Bank of England
2. Protest outside RBS branch in Threadneedle Street
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