Sinn Féin is to endorse a picket by relatives of those murdered allegedly as a result of security force collusion with loyalist paramilitaries.
The protesters are to gather at the London headquarters of the intelligence agency MI5, the Ministry of Defence and Conservative central office.
Speaking yesterday at a press conference in Sinn Féin's Falls Road headquarters, Mr Martin McGuinness, said 100 relatives of murder victims would mount the protest on February 4th.
He claimed that British intelligence agencies had infiltrated and directed loyalist paramilitaries. He added that some 300 weapons arrived in Northern Ireland in 1987 "with the full participation and knowledge of British Intelligence".
Mr McGuinness alleged: "The British state created an efficient sectarian murder machine and set it loose on the nationalist community in the north of Ireland." This week's report by Ms Nuala O'Loan, the police ombudsman, that there had been no earnest effort by the RUC to find the loyalists who killed Mr Seán Brown underlined the "multi-layered nature of collusion", he said.
Sinn Féin also welcomed the granting of leave by the High Court for a judicial review into the non-publication by the British government of the Cory report into paramilitary murders in which collusion is alleged.