A high court judge in Belfast has rejected a court case against a no-deal Brexit.
One of the three alleged cases was the victim's activist, Raymond McCord, who plans to appeal the decision.
The court heard arguments that a no-deal would adversely affect the peace process and jeopardize the Good Friday Agreement.
However, the judge said the main aspects of the case were "inherent and unmistakably political."
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Lord Justice Bernard McCloskey also ruled out a challenge to the suspension of Parliament as the matter formed the "centerpiece" of the proceedings in England and Scotland ,
Parliament's current five-week suspension, a process known as progogging, began in the early hours of Tuesday.
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The Judge's verdict is, in essence, that the matter he should decide on is politicians should be treated, not the courts.
Lord Justice McCloskey said, "Virtually all the evidence gathered belongs to the world of politics."
In view of the cases being heard in UK and Scotland before the Supreme Court of the United Kingdom, Raymond McCord and his lawyers consider that issues relating to Northern Ireland should also be investigated there.
Following Thursday's morning hearing, McCord's attorney Ciaran O'Hare said that in the absence of a Stormont executive for Northern Ireland, it is most important for people to go to court.
A UK government appeal against the verdict will be heard in London's Supreme Court next week.
Lord Justice Bernard McCloskey added that the courts must "meet certain limits".
An appeal hearing is likely to be held on Friday.
Mr. McCord's 22-year-old son, Raymond junior, was murdered in 1997 by the UVF in Belfast.
Nobody was ever convicted for the murder of a former RAF man.