Ian Tomlinson died after he was pushed over by a police officer
A third post-mortem examination will be carried out on Ian Tomlinson, who died during the G20 protests, the City of London coroner has said.
The request was made by lawyers for a police officer interviewed about the newspaper vendor's death on 1 April.
Mr Tomlinson, 47, died minutes after he was pushed over by a policeman during demonstrations in central London.
Two examinations have come to different conclusions on the cause of death. A third will be conducted on Wednesday.
A spokesman for the City of London coroner said: "HM deputy coroner for the City of London has agreed to a request from the legal advisers to a police officer for a further post-mortem examination to be conducted on the body of Mr Ian Tomlinson."
A Metropolitan Police pathologist would also be present to observe the post-mortem examination at the request of Scotland Yard, he said.
Mr Tomlinson's body would then be released to his family, he added.
The police officer at the centre of the allegations has been suspended and interviewed under caution on suspicion of manslaughter over the death of Mr Tomlinson.
He was filmed hitting the newspaper seller with his baton and throwing him to the ground.
A first pathologist, Dr Freddy Patel, concluded that Mr Tomlinson died from coronary artery disease.
But Dr Nat Cary carried out a second test and found evidence of hardening of Mr Tomlinson's heart but said it was not sufficient to have caused the man's death.
He concluded abdominal bleeding had caused his death.
The incident is currently being investigated by the Independent Police Complaints Commission (IPCC).