Gardai have uncovered "new and significant" leads in their hunt for the killers of double agent Denis Donaldson, an inquest has heard.
Mr Donaldson, a former IRA member and senior official in Sinn Fein, was shot dead at a remote cottage outside Glenties, Co Donegal in 2006.
Lawyers representing his relatives boycotted yesterday's hearing at the Mount Errigal Hotel in Letterkenny in protest at plans to adjourn the inquest for a 13th time.
Ciaran Shiels, from Madden & Finucane solicitors in Belfast, had earlier faxed coroner Dr Denis McAuley with a detailed letter of complaint.
Barrister for An Garda Siochana Stephen Byrne told the hearing that the Garda reasons for seeking a new adjournment were "bona fide."
Supt Michael Finan, who is leading the hunt for Mr Donaldson's killers, told Dr McAuley that new leads had emerged since the inquest was last adjourned in September last.
The former IRA member had worked undercover for the security forces. He was shot dead in April 2006. In 2008 the Real IRA in Londonderry claimed responsibility.