Wed 08 Aug 2001Loyalists threaten to step up bomb campaignLoyalist paramilitaries warned they would step up their terror campaign after a series of incidents throughout Northern Ireland today.A pipe bomb was left at offices used by Sinn Féin’s Mr Martin McGuinness in Cookstown Co Tyrone, a booby trap device was planted under a former republican prisoner's van in Armagh city, and a caller claimed a number of bombs had been left at GAA grounds between Coleraine and Cookstown.