A BBC programme has aired claims that the PSNI missed clues in the hunt for the murderers of IRA informer Denis Donaldson, shot dead in Co Donegal five years ago.
The former paramilitary and senior Sinn Fein officer was found dead in his remote home at Cloghercor, near Doochary in Co Donegal, on April 4, 2006.
Former Chief Executive of Police Ombudsman's Office in the North, Sam Pollock told the BBCs Spotlight programme that he was unhappy with the approach taken in cases involving informers.
The programme revealed details of a complaint to the ombudsman by the family of Denis Donaldson, who was shot dead at a remote cottage in Donegal in April 2006.
But the ombudsman declared the case closed last year with a finding of ‘no misconduct’ by the police.
But Spotlight has established that investigators were not aware of a potentially vital piece of information that may shed light on what happened.
However, the ombudsman, Al Hutchinson, rejected claims that his office has gone soft on the police.