The UVF 's Mid-Ulster Brigade carried out further attacks during this same period . These included the Miami Showband killings of 31 July 1975 – when three members of the popular showband were killed , having been stopped at a fake British Army checkpoint outside of Newry in County Down . Two members of the group survived the attack and later testified against those responsible . Two UVF members , Harris Boyle and Wesley Somerville , were accidentally killed by their own bomb while carrying out this attack . Two of those later convicted ( James McDowell and Thomas Crozier ) were also serving members of the Ulster Defence Regiment ( UDR ) , a part-time , locally recruited regiment of the British Army
Miami Showband killings
Miami Showband killings
Ulster Volunteer Force