Ian Tomlinson's family have made further complaints to the IPCC
Ian Tomlinson's family has formally asked for a number of additional matters surrounding his death to be investigated, their solicitor has said.
The 47-year-old died minutes after he was pushed over by a policeman during the G20 protests in central London.
The Independent Police Complaints Commission is examining the case.
Matters such as the possible failure of officers to intervene, had previously been raised with the IPCC, but have now been submitted as complaints.
The IPCC has also been asked to investigate the possible failure of police officers to later report the apparent assault on Mr Tomlinson.
He was walking home at the time of the incident on 1 April and was not part of the protest.
The complaints also include the possible use of a dog against the newspaper vendor.
Lawyers for Mr Tomlinson have requested that the content and timing of communications to the press by the Metropolitan Police Service in the immediate aftermath of Mr Tomlinson's death be studied.
Their final concern is whether the officers, who were around Mr Tomlinson at the time he collapsed, acted in an "effective or timely manner with regard to resuscitation and first aid", and with liaising with the London Ambulance Service.
Solicitor Jules Carey, of Tuckers solicitors, said: "The family has no wish to divert the attention of the IPCC away from its primary focus which must always be the cause of Mr Tomlinson's death, but the family have a lot of questions and are looking to the IPCC for answers."
A constable from the Met's territorial support group has been suspended and questioned under caution for manslaughter.
Results of a third post-mortem examination on Mr Tomlinson, carried out at the request of the officer, have yet to be made public by City of London Coroner Paul Matthews.
An IPCC spokeswoman said: "We can confirm that complaints have been received from the family of Ian Tomlinson.
"These have been forwarded to the Metropolitan Police and City of London Police, with the complainants' consent, for recording."