Hillsborough IPCC inquiry 'will take two years'
The Hillsborough Family Support Group has said the police watchdog inquiry into the tragedy should be sped up.
The Independent Police Complaints Commission (IPCC) is to investigate up to 2,400 officers who were on duty when 96 Liverpool fans died in 1989.
It has written to families saying the inquiry is expected to take two years.
The letter also said the coroner who conducted the original inquests would be asked about why he ordered checks on the blood alcohol levels of victims.
Dr Stefan Popper is expected to be questioned in August.
Margaret Aspinall, who lost her son James at Hillsborough, said: "I'm really tired of this now, I want this over."
She said: "So many families are ill now and they need to see this through, I need to see it through."
The IPCC announced it would investigate after the Independent Hillsborough Panel Report revealed 164 police statements had been altered - 116 of them to remove or change negative comments about the policing of the FA Cup semi-final between Liverpool and Nottingham Forest at the Sheffield stadium.
The report found up to 41 of the 96 who died could potentially have been saved if they had received treatment earlier.
The victims' families have always challenged the original inquest, which concluded all the victims were dead or brain dead 15 minutes after the game had kicked off at 15:00.