Campbell is to face extradition proceedings in Northern Ireland
One of the men held to be responsible for the Omagh bombing in a civil judgement will face extradition proceedings in Northern Ireland.
Liam Campbell, 46, is wanted in Lithuania in connection with arms smuggling offences.
Extradition proceedings are at an advanced stage in the Irish Republic and a defence lawyer argued those should be allowed to continue.
However, a judge said Lithuania wanted the case to be heard in the UK.
He said there was no reason for him to turn their request down and remanded Campbell in custody.
Last month, Campbell, of Upper Faughart, County Louth, and three other men were ruled to have been responsible for the Omagh bombing after a landmark civil case brought by families of some of the victims of the 1998 atrocity.
Campbell was arrested in May after crossing the border into Northern Ireland.
Belfast Recorder Tom Burgess said a warrant for Campbell's arrest was sent to Northern Ireland and to the Republic of Ireland at or about the same in January.
He said Campbell had chosen of his own free will to come into Northern Ireland in May.
"I find no reason to impart to the PSNI any bad faith or abuse of their powers," he said.
"They were arresting someone under an instrument duly issued by a judicial authority. That judicial authority has advised that it wishes the matter to proceed in this jurisdiction."
Extradition proceedings against him over the alleged weapons plot had already been going on for six months in the Republic at the time he was arrested in NI.
Belfast Recorders Court was previously told the plot involved smuggling weapons including automatic rifles, ammunition, projectors, detonators and timers into Ireland for use by dissident republicans.