The film also claims that one of the killers was an informer, and an ex-police officer told the film-makers that Special Branch may have had foreknowledge of the attack. According to the officer, Special Branch told him there was an arrest operation ready to catch the UVF unit, after receiving intelligence from an informer. The informer told Special Branch hours before the attack that it had been called off because of problems with the getaway car. The arrest operation was cancelled, but the attack went ahead.