Hours later, a massive bomb in London's Canary Wharf area killed two people, injured more than 100, and caused hundreds of millions of pounds' worth of damage. Since then, the IRA have exploded another bomb in the heart of Manchester, on June 15, and launched a mortar attack on a British barracks at Osnabrueck in Germany on June 28.
Loyalist leaders insist their ceasefire still holds.
Breakaway activists from the Loyalist group the Ulster Volunteer Force were arrested and questioned but later released. Police say they suspect it was a sectarian killing but Loyalist leaders have expelled the men who were questioned by police and say their ceasefire is still in force.