 According to Tiernan, a few days before the bombing, Hanna had visited a pub in Portadown to check that everything was in place for the operation to be carried out.The Monaghan bombing had been organised as a diversionary tactic to draw Gardaí away from the border, enabling the bombers to cross back into Northern Ireland undetected.According to submissions received by Mr. Justice Barron, the Monaghan bomb was assembled at the home of high-ranking UVF member Harris Boyle in Portadown.