The Darkley killings or Darkley massacre was a gun attack carried out on 20 November 1983 near the village of Darkley in County Armagh, Northern Ireland. Three gunmen attacked worshippers attending a church service at Mountain Lodge Pentecostal Church, killing three Protestant civilians and wounding seven. The attackers were members of the Irish National Liberation Army (INLA) acting on their own. They claimed responsibility using the cover name "Catholic Reaction Force", saying it was retaliation for recent sectarian attacks on Catholics by the loyalist "Protestant Action Force". The attack was condemned by the INLA leadership.