Five men served writs over Omagh
The legal move involved civil proceedings being taken by representatives of the 29 victims of the Omagh blast, which left almost 300 other people injured.
A lawyer for nine of the families of those killed handed writs to two of the prisoners, Liam Campbell, serving a sentence for membership of an illegal terrorist organisation, and Michael McKevitt, awaiting trial after becoming the first man to be charged with directing terrorism under Dáil legislation enacted in response to the Omagh bomb.