Aftermath Two hours before the bomb detonated, Thomas McMahon had been arrested at a Garda checkpoint between Longford and Granard on suspicion of driving a stolen vehicle. He was tried for the assassinations in Ireland and convicted on 23 November 1979 based on forensic evidence supplied by James O'Donovan that showed flecks of paint from the boat and traces of nitroglycerine on his clothes. He was released in 1998 under the terms of the Good Friday Agreement..
Aftermath Two hours before the bomb detonated, Thomas McMahon had been arrested at a Garda checkpoint between Longford and Granard on suspicion of driving a stolen vehicle. He was tried for the assassinations in Ireland and convicted on 23 November 1979 based on forensic evidence supplied by James O'Donovan that showed flecks of paint from the boat and traces of nitroglycerine on his clothes. He was released in 1998 under the terms of the Good Friday Agreement.