TWO MEN have been arrested as part of the investigation into the murder of Denis Donaldson in Co Donegal in 2006.
Donaldson, a senior Sinn Féin official, was shot dead at an isolated cottage near the Glenties in April 2006.
His murder came after he revealed he had led a secret life as an informer for MI5, the RUC and PSNI for over 20 years.
Donaldson had been a prominent member of the IRA since the 1970s, and was interned with Bobby Sands.
After the revelations, Donaldson fled to the remote cottage in the Glenties where he was tracked down and murdered within a matter of weeks.
Two men, aged in their 40s and 30s, were arrested last night and are currently being held at Letterkenny Garda Station.