The Policing Authority has said it is "very concerned" by material in public circulation relating to an eviction in Dublin on Wednesday and the appropriateness of the garda presence.
An Garda Síochána earlier announced a criminal investigation into alleged criminal damage and an internal review of "lessons learned" after the incident earlier this week in which a number of people were reportedly evicted from a premises on Berkeley Road in Dublin.
Social media footage appeared to show a number of men dressed in black wearing face coverings, hats and dark glasses entering the house in Phibsborough on Wednesday.
They are understood to have told the residents to leave, before boarding up the windows and door.
A number of gardaí were in attendance, the footage circulating on social media shows.
In a statement, the Policing Authority said it was concerned about "the appropriateness of the garda presence and of some of the things that appeared to have been said, and about the fact that circumstances were allowed to develop where the impression was conveyed that the Garda Síochána had an active role in the event".
"The impression was also conveyed that the Garda concern for vulnerable people so amply demonstrated in the context of the health emergency was not evident in this case."
In a statement earlier, An Garda Síochána said: "A criminal investigation into alleged criminal damage at the premises on the 12 August 2020 is currently being carried out.
"Our purpose at events of this type, which are essentially civil legal matters, is not to be an integral part of the event but to prevent breaches of the peace and ensure the safety of all persons involved.
"In the ever increasingly complex policing environment, front-line members of An Garda Síochána must make dynamic and real-time decisions based on the information available to them at any particular time."
Deputy Commissioner John Twomey said he has appointed a superintendent to examine all the circumstances of the incident from a "lessons learned" perspective.
He said: "An Garda Síochána is a learning organisation. I have requested an urgent lessons learned report on this recent incident.
"If, where An Garda Síochána can learn from this experience, we will do so to ensure that we continue to provide the best policing service going forward based on our tradition of policing by consent."
The Policing Authority statement added that the Chairperson of the Authority had a number of contacts and conversations with Deputy Commissioner Twomey about these issues on Thursday and Friday.
It noted: "The statement from the Garda Síochána is welcome and important in that its recognition that there are lessons to be learned from the incident is an acceptance that all was not right with the Garda actions on the day.
"The Code of Ethics established for the Garda Síochána by the Policing Authority in 2016 acknowledges that Gardaí often have to make on the spot decisions, sometimes with incomplete knowledge of all the facts. It is on the implementation of the learning from these events that attention must now focus.
"Promoting public understanding of policing is a statutory role of the Authority and concern for anything that might lessen public confidence in the Garda Síochána is central to that.
"Events that took place in North Frederick Street two years ago should have informed the approach of, and guidance to, Garda members in situations such as arose a few days ago.
"The Authority will continue its detailed engagement with the Commissioner and his senior colleagues to ensure that everything possible will be done so that the willingness to listen and learn expressed in the Garda statement will bear fruit in policy and practice."