Gardai will speak to friends of murdered GAA supporter Joe Deacy tomorrow, as they review the case.
This day five years ago, the 21-year-old was found with head injuries in Swinford, Co Mayo - and died the following day.
The DPP decided not to charge a suspect with the Englishman's murder.
A memorial match is taking place in Mayo tomorrow, to mark the fifth anniversary of his death.
Joe's sister, Charlotte Harper, says she's determined for someone to be brought to justice.