The co-ordinated sectarian shootings of the Reavey and O'Dowd families , allegedly perpetrated by the Glenanne gang and organised by Robin Jackson , was followed the next day by the Kingsmill massacre . Gunmen from the Provisional IRA gunmen stopped a minibus carrying eleven Protestant men home from their workplace in Glenanne . The gunmen lined them up alongside it and shot them , killing ten . The " South Armagh Republican Action Force " claimed responsibility , saying that the shooting was retaliation for a string of attacks on Catholic civilians in the area by loyalists , particularly the Reavey and O'Dowd killings . A 2011 Historical Enquiries Team ( HET ) report however found that Kingsmill had been planned in advance of these killings
Kingsmill massacre
Kingsmill massacre
Glenanne gang