IRA weaponry was handed over to dissident republican groups last year, the Democratic Unionist Party leader the Rev Ian Paisley has claimed.
The Independent International Commission on Decommissioning had been given a revised estimate of the IRA's arsenal by Irish and British intelligence officers last year.
The September 2004 list had been drawn up to take account of the arms that had gone into the hands of the Continuity IRA and the "Real IRA", the DUP leader said. Refusing to consider sharing power with Sinn Féin, he said: "We made it clear since Leeds Castle that we will not be going into government with SF."
The Independent Monitoring Commission's reports in October and January on the state of the IRA's level of activity would not make any difference.
"They couldn't give a clean bill of health to the IRA. The IRA is supposed to be disbanded. How can they give it a clean bill of health?" he said.
Sinn Féin leader Gerry Adams had called policemen terrorists on Monday night, he said: "Then you say that we should go into government with people like that.We'll not be doing it."
No one could say that all of the IRA's arms are gone, Dr Paisley told journalists following a Belfast meeting with the head of the IICD, Gen John De Chastelain, and his two colleagues, Brig Tauno Nieminen and Ambassador Andrew Sens.
"The more the searchlight is put on this the more we discover that there is a cover-up," he said, speaking outside the IICD's offices in Rosepark House.
"Even the security forces admitted that some of these weapons which were in the original list had now been given to the other dissident republican organisations, and that is a very serious thing."
Rejecting the testimony of the two independent witnesses, the Rev Harold Good and Redemptorist priest Fr Alec Reid, Dr Paisley said they had been appointed by the IRA, not by the IICD, or the governments.
"We discovered that the two witnesses turned up in the presence of the IRA, that none of the commission heard from the governments who the witnesses were, nor did the Governments certify them. They were not appointed by the Governments. The (British) government has said that they didn't appoint them," he went on.
Mr Good and Fr Reid could not vouch that all of the IRA's weapons were destroyed because they had not even been given sight of the intelligence estimates by Gen De Chastelain, he said.
DUP deputy leader Peter Robinson said the IRA had not "made a good start in convincing the community".
"One of the factors that is completely central to all of that is whether the estimates given by the intelligence services are accurate estimates, or whether they happen to have been cobbled together in order to provide the general with figures that they knew the IRA were prepared to hand over."
The intelligence reports given to the IICD had never been precise, but rather had offered a range of possible arms that could have been in the IRA's hands.
"When we asked the question of how wide was the tolerance they refused to tell us. The tolerance could have been from one, to a 1,000, in terms of rifles.
"If two had been handed in they could say that that was consistent with the estimates that were given but it clearly would not represent the totality of the IRA weaponry.
"So there was massive flexibility, but even more disturbing, I think, was the fact that they admitted that last September the intelligence services had cobbled together a new list. The original list which indicated what intelligence services believed was the weaponry of the IRA had been changed. Why was it changed? We asked the question and they said it could have been because some of the weapons went off to other republican organisations. Well, that is a worrying factor for us all if we have a new list put out to take account of the fact that the IRA had handed over their weapons to some of their sister organisations."
