Garda Commissioner Drew Harris has said gardaí have received footage from RTÉ today from the RTÉ Investigates programme on the riots at Coolock two months ago.
Commissioner Harris said the investigation team has to establish if it contains further evidence against existing individuals already identified or new suspects for serious offences including assault and criminal damage.
He reiterated that the decision to stand down the public order unit that morning before the riots was a mistake, and told the Policing Authority that he did not defend that decision at a previous meeting.
In a statement, RTÉ said: "Following the receipt of a court order, RTÉ can confirm it has provided An Garda Síochána with footage it recorded inside the former Crown Paint factory for the recent RTÉ Investigates documentary, while fulfilling its journalistic obligations to protect sources.
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"The RTÉ Investigates documentary demonstrated a clear public interest in highlighting the use of disinformation to initiate violence, showing the extent of how the state has, at times, struggled to respond when these protests have gotten out of control, and raises questions around freedom of speech and intimidation of immigrants, journalists, business people, volunteers and the An Garda Siochána themselves."
Commissioner Harris also said he had signed off on the procurement of two new water cannon vehicles which can hold 5,200 litres of water.
There have been 862 protests so far this year, a 56% increase on the same period last year when there were 553. There were 285 the year before, the vast majority passed off peacefully.
The increases have been in Dublin, the Eastern and Southern Regions.
The Assistant Commissioner in charge of Dublin also told the meeting today that an RTÉ producer was refused entry into a meeting between the gardaí and the contractor a month before the riots at Coolock.
Angela Willis said the contractor told the gardaí five days before that he intended to commence work on the site at Coolock on 15 July in spite of garda concerns.
She said the local Superintendent expressed concern at the "very short notice" and that he "may not have appropriate resources" to police the incident.
She said there were other competing policing demands that weekend, including events in Croke Park and at the 3Arena but that the contractor was "adamant" he was moving on with his plan, and that gardaí developed a plan to facilitate the movement of a number of lorries.
The Policing Authority meeting was also told a report on public order policing which the Minister for Justice has yet to publish found there was "insufficient central governance around public order incidents" and that within the gardaí there was "no clear lead on public order policing."
Assistant Commissioner Paula Hillman told the meeting that co-ordination of public order policing within the gardaí remains with the Steering Group under her command which includes operational regional representatives and representatives from the garda's fleet, finance and training departments
She also said that additional resources have been made available.
The Commissioner said the command structures were now "a lot more slick" and they have additional resources and tactics to deal with a situation like this in the future.
Chief Superintendent Majella Armstrong said the gardaí were restoring relationships in Coolock that the gardaí were back on the beat and visibility was key.
She said the gardaí had numerous meetings with 'Coolock says No’, there were ongoing conversations, and they were working closely with northside partnership and other groups to restore public confidence.
