Lawyers representing most of the relatives of the Omagh bomb victims have attempted to serve legal writs issued by the Belfast High Court in a civil action, against two men in the Dundalk area and three in Portlaoise prison.
The relatives are attempting to get compensation through a civil action from five individuals who they allege were connected with the bombing nearly four years ago.
29 people were killed in the Omagh bomb, including a woman expecting twins.
It was one of the worst such incidents during the troubles in the North.
Despite lengthy police investigations on both sides of the border, so far only one person has been sentenced in the Republic in connection with the explosion.
Last August, on the eve of the third anniversary of the bombing, solicitors acting for relatives of most of the families who were frustrated by the lack of criminal prosecutions began a civil action at the High Court in Belfast.
They then had 12 months to serve writs on the men named.
That process began early this morning when in the presence of Gardaí, a solicitor called to two houses, one in Dundalk and a second in County Monaghan, which he believed to be the last known addresses of two of the men.
He posted writs through the letterboxes addressed to Seamus Mckenna in one house. The second was addressed to Seamus Daly. The plaintiffs allege both men are linked to the Omagh bombing.
At Portlaoise Prison, a solicitor for the victims was allowed admission and served writs person to person on two men named in the Belfast Civil Action.
