Northern Ireland's chief constable has been ordered to conduct an independent investigation into alleged state collusion with a loyalist gang.
At the Court of Appeal in Belfast, Lord Chief Justice Declan Morgan rejected an appeal by former PSNI chief constable George Hamilton against a 2017 judgment that the police's failure to conduct an overarching examination of state collusion with the Glenanne Gang was inconsistent with its human rights obligations.
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The gang was a unit of the Ulster Volunteer Force (UVF) that counted rogue security force personnel among its members.
Operating mostly in Tyrone and Armagh, the gang has been blamed for around 130 sectarian murders during the 1970s and 1980s, including the Miami Showband massacre and the Dublin and Monaghan bombings.
There was standing room only in court this morning as families of those killed filled the public gallery and lined the aisles to hear the judge deliver the response to the appeal.
Outside the court, supporters, including other bereaved families such as those who lost loved ones in disputed shootings at Ballymurphy in 1971, held banners in solidarity.
The judge said the court would not direct Chief Constable Simon Byrne on how the independent officers should proceed but he warned that if there are any unduly delays in appointing the officers, he would be at risk of further proceedings challenging such a failure.
The independent Historic Enquiries Team (HET) had partially completed a probe into the activities of the Glenanne Gang before its work was halted by PSNI commanders.
The HET had examined individual murders committed by the gang but had not undertaken an overarching thematic review of the collusion allegations.
The PSNI's decision to stop the HET review was challenged by way of judicial review by the family of one of the gang's victims.
The case against the PSNI was taken by Edward Barnard, whose 13-year-old brother Patrick was killed by the gang in 1976.
Outside court, he welcomed the judgment, though he noted that 20 relatives of Glenanne victims had died since the initial judicial review proceedings commenced in 2015.
He claimed the police had treated the families like "pestilence".
"For the families here today we will keep on fighting for the truth for our dead relatives, because with the truth we honour them," he said.
The Barnard family lawyer Darragh Mackin said it was a "momentous day" for the Glenanne families.
"It has been a long, long road to get to this day but thanks to publications, documentaries and now court judgments these families have been exonerated, they have been vindicated, the court has told us today what we always knew - that there was a state policy of collusion relating to the Glenanne series," he said.
"The time has now come for justice for the Glenanne families and what we now do is we call urgently upon the new chief constable (Simon Byrne) to learn from the mistakes of the previous chief constable (George Hamilton) and ensure this investigation begins expeditiously and without delay - these families have waited long enough for the truth and it's now time that truth and justice was publicly reported in a public document with the police signature at the top of it."
Tracey Mulholland, whose grandfather Arthur Mulholland was killed in 1975, said: "Let this begin now, as the judges have ruled, let it begin immediately, so that we don't lose any more of our people.
"This isn't going away - there are grandchildren coming down the line and this will go on. We will fight and we will remain strong so that truth and justice can be given to these families."
She said the families felt vindicated.
"We all knew there was collusion," she said. "We have been vindicated because we were called liars in the past. It has taken this long, people here have waited over 40 years for something like this to happen - it's a disgrace.
"The new chief constable needs to do the right thing and not have grandchildren coming after these people to fight for that cause."
Ms Mulholland and other relatives criticised Mr Hamilton for not attending the court hearings in person.