The Irish National Liberation Army (INLA) has officially ended its campaign of violence.

The Irish republican paramilitary group, which is responsible for dozens of murders during Northern Ireland’s Troubles, announced at a commemoration of its founding member on Sunday that it will pursue exclusively peaceful means for achieving its political goals.

Around 60 republicans and socialists gathered in Bray, County Wicklow in honor of Seamus Costello, who founded the INLA 35 years ago. A member of the Irish Republican Socialist Party, the political wing of the group, announced to the crowd that the organization has decided to end its armed struggle and decommission its weapons.

He explained that the INLA has concluded that its goal of a 32 County Socialist Republic would be best achieved through purely peaceful and political means, bringing an end to a string of violence which saw the murders of around 150 people.

The INLA has been on ceasefire since 1998, but members have carried out several shootings since then.

The relatively small group, which was established in 1975, murdered Northern Ireland spokesman Airey Neave in 1979 after planting a bomb under his car at Westminster.

The group also killed 17 people in 1982 in the infamous bombing at Droppin’ Well Pub in Ballykelly, County Derry, and murdered loyalist leader Billy Wright at the Maze prison.

Many of the members of the INLA were formerly a part of the Official IRA. The organization is mainly involved with organized crime, such as extortion and robbery, in Ireland.