Irish Independent Wed. May 12, 2004 Witnesses 'saw cars that were later used in bombings'  Caroline Crawford  THE public gallery at the inquest into the deaths of 34 people killed in the Dublin-Monaghan bombs was cleared yesterday as two anonymous witnesses gave their evidence.  The two, known as Witness B and Witness C, were allowed to give evidence without being seen by the public and families of the victims because of fears for their safety.  The court heard that on the morning of May 17, 1974 Witness B saw at least two of the cars that were later involved in the bombings.  He was driving into Drogheda when he spotted two cars parked near Obelisk Bridge. Two men were working on the cars.  When the cars drove off, Witness B followed one of them in the direction of Sheephouse.  He told the court that he recorded the number of the car, which had the Northern Irish registration DIA 4063, because it had been driving dangerously.  A second witness, known as Witness C, told the court he had noticed a suspicious man, who seemed "uneasy" and "was looking back over his shoulder" in Drogheda on the morning of the bombings.  Later, as Witness C passed a car on the road out of Drogheda, he was forced to take evasive action to avoid a collision. This car was later used in one of the Dublin blasts.  Meanwhile, the possibility that the bombers who planted three car bombs in Dublin and one in Monaghan were assisted by security forces in the North has never been ruled out, according to the former Deputy Commissioner of the Garda Siochana.  Retired Deputy Commissioner John P McMahon told the inquest the belief that the Monaghan bomb was put together by members of the UVF at a farm in Portadown, with the assistance of members of the security forces, remained a possibility.  "It's never been ruled out and remains a possibility," he said. He was the Chief Superintendent for Cavan and Monaghan at the time of the blasts.  He said that from the beginning, they worked on the suspicion that the perpetrators of the attacks came from the North.  On May 23, 1974, Mr McMahon, along with other gardai, attended a meeting in Portadown with senior members of the RUC.  Gardai asked for the RUC's help, and opened line of communication between the bodies. The RUC's help was required as the suspects lived outside the jurisdiction of the State.  However, Mr McMahon was unable to say whether three men identified in a carpark were arrested or interviewed by the RUC or whether three people identified in relation to the Monaghan bombing were interviewed by gardai.  When asked whether any of the suspects were members of the RUC, Mr McMahon replied: "We had no evidence to prove that." Mr McMahon also accepted that "doubts were entertained as to the capacity" of the UVF to put bombs of this kind together without any assistance. He was also asked about the suspicion that the UVF had received assistance from the security forces.  "That suspicion was entertained," he said.