The Irish National Liberation Army is poised to officially announce it has decommissioned its weapons, sources have claimed.
The group is expected to reveal on Monday that it has destroyed its illegal arsenal of weapons.
The splinter group was responsible for some of the most infamous attacks of the Troubles, including the killing of Conservative MP Airey Neave in 1979.
A republican source claimed the decommissioning happened in recent weeks.
"The announcement is expected on Monday," he added.
Four months ago the INLA used a graveside oration outside Dublin to confirm its "armed struggle is over" and vowed to end its 35-year campaign of violence in Northern Ireland.
There was confusion however, regarding whether or not the group was prepared to decommission its illegal arsenal of weapons, after the statement read to supporters failed to promise a disposal of arms.