ion of who had carried out the attack but BBC television said it could have been the work of Pro-British Protestant guerrillas. The two dead men were friends - one a Catholic and the other a Protestant. The victims had been told to lie on the floor by two masked gunmen who burst into the bar and then opened fire. The two other injured men were hurt but did not require hospital treatment. The incident was a fresh blow to Northern Ireland`s struggling peace process, where multi-party talks have been overshadowed by an upsurge of bombings and shootings since Christmas. Britain and Ireland - co-sponsors of the drive for peace between Catholics and Protestants - suspended the Irish Republican Army`s Sinn Fein political wing from the talks last month after Northern Ireland police said the IRA was involved in two recent shootings. Earlier on Tuesday, a Catholic man survived an attempt to kill him in County Antrim when his assailant`s gun jammed. And in the neighbouring Irish republic, soldiers destroyed a 600 pound (275 kg) bomb using controlled explosions. The bomb, found in the boot of a car, might have been intended for use in an attack in Northern Ireland, police said.