McGuinness insists British operated Stormont spy ring

Sinn Féin's Martin McGuinness has insisted the only spy ring which operated out of Stormont was operated by British Intelligence Services.

McGuinness was speaking after prominent republican Denis Donaldson admitted working as a British agent for the past 20 years.

McGuinness said he does not know why Denis Donaldson did what he did, but he says the implications are enormous.

Referring to the alleged British spy ring, he said its purpose was to collapse the institutions set up under the Good Friday Agreement, a purpose decided by people who were not prepared to accept the accord, and that the ring was operated by what he calls "securocrats hostile to the peace process".