The Crown Prosecution Service will announce its decisions on charges relating to the Hillsborough disaster on Wednesday.
Families of the 96 men, women and children killed at the 1989 FA Cup semifinal will gather in Warrington to be informed of the decisions by Sue Hemming, CPS head of special crime and counter-terrorism division.
Operation Resolve, which investigated the causes of the disaster, and the Independent Police Complaints Commission (IPCC) passed files of evidence relating to 23 suspects, including individuals and organisations, to the CPS earlier this year.
Margaret Aspinall, chairwoman of the Hillsborough Family Support Group, said: "It is going to be a day of mixed emotions for the families and we have had so many of them.