In Britain 13 retired or serving police officers are being questioned under criminal caution over a range of alleged offences in connection with the Hillsborough Disaster.
The UK Independent Police Complaints Commission (IPCC) says the allegations include manslaughter, misconduct in public office and perverting the course of Justice.
The 11 officers interviewed so far are all retired. One of the suspects awaiting interview remains a serving officer.
96 people were killed at Hillsborough in April 1989 at a semi-final football match between Liverpool and Nottingham Forest.
Over 700 others were injured during a massive crush at the stadium.
In December 2012, fresh inquests into the case were ordered.
The High Court in London quashed the original verdicts of accidental death for the 96 Liverpool fans who died. But the British Home Secretary has demanded a new police investigation.
Theresa May said a report of findings was to be investigated in an inquiry led by Jon Stoddart - a former chief constable of Durham police in north-east England.
