The Sinn Féin Ard-Fheis in Dublin has backed the party leadership's position on policing in Northern Ireland, leaving any decision on participation to a special Ard Fheis once agreement has been reached on the transfer of policing and justice powers from London.

A number of speakers called for the party to refuse to participate in policing arrangements while there was still a British presence in Northern Ireland.

In the closing stages of the Ard-Fheis this afternoon, a formal 'welcome home' message was sent to the three men accused of training FARC guerrillas in Colombia.

Delegates also approved a call on the British and Irish Governments to release all political prisoners.

Earlier, Sinn Féin's chief negotiator, Martin McGuinness, told the Ard-Fheis that the current round of political discussions in the North will run aground unless the issue of the Independent Monitoring Commission is resolved.

Mr McGuinness told delegates the IMC's most recent report contained 'unsubstantiated allegation, fantasy and fiction presented as fact'.

He said they had told both Governments that the IMC is a problem they created, and it is one which they must resolve.

Mr McGuinness also said that if it becomes clear in the next few months that it is not possible to restore political institutions, the Assembly should be scrapped and the salaries of MLAs withdrawn.

He also criticised the PDs, Fine Gael and the Labour Party for opposing northern representation in the Oireachtas, and the Taoiseach for announcing that he is not proceeding with the proposal.

In his leader's address yesterday evening, Gerry Adams accused the Taoiseach of 'bad faith' in backing away from a commitment to allow Northern MPs speak in the Dáil.

He also claimed the two Governments were 'pandering' to the DUP.

Mr Adams commended the IRA decision to formally end its campaign, and said the Sinn Féin leadership was firmly opposed to any return to an armed struggle.

He promised to effectively tax high earners, with increased taxes on capital gains, property speculation and corporate profits, and to provide more housing and childcare, and a better health service.