Anyone who may have information about the 1981 Stardust disaster is being asked to submit it to an independent investigator examining whether a new public inquiry is warranted.
Advertisements have been placed in today's newspapers urging people to come forward with information to the investigation being led by barrister John Gallagher.
Mr Gallagher was appointed by the Government to examine if a case exists for a new inquiry into the nightclub fire that killed 48 people on St Valentine's Day in 1981 in the Stardust nightclub in Artane.
The families of the victims have commissioned an independent forensic report that they say proves the blaze started in the roof space of the club and could have been prevented.
The initial inquiry found that the fire was started deliberately in a ground-floor alcove.