The UDA members involved were arrested shortly after the massacre . During their first court appearance , Knight was filmed laughing , taunting and shouting abuse at the victims ' relatives as he was led from the building . In February 1995 , Irwin , Deeney , Knight and McNeill were sentenced to life imprisonment for their involvement in the attack . Knight was also convicted for the Castlerock killings . In 2000 , they were released early , along with other paramilitary prisoners , under the terms of the Good Friday Agreement . Irwin called the massacre " payback " and said he had " no remorse " . After their release , both Irwin and Knight are believed to have joined the Neo-Nazi militant group Combat 18
Castlerock killings
1993 Castlerock killings
Greysteel massacre