A strong garda presence was in place at the High Court as a crowd of around 40 people gathered outside as judicial review proceedings brought by Gemma O'Doherty and John Waters against the State were mentioned.
They have taken a legal challenge against the State to strike down laws introduced as part of the Covid-19 pandemic.
Barriers were put in place at either end of Chancery Place to stop crowds from entering the court.
Members from the Garda's Public Order Unit and from the Bridewell Garda Station were stationed at all main entrances around the building.
There were concerns that the group would attempt to access the court building.
Last week, up to 100 people gathered in the Round Hall inside the High Court.
The Courts Service said it was ''disappointed and appalled'' that people decided to attend in such large numbers last week.
Clutching a copy of the Constitution, Ms O'Doherty challenged gardaí to ''produce the legislation'' preventing members of the public from entering the High Court.
Gardaí explained that under the current restrictions on movement large numbers of people were not allowed inside the court.
Ms O'Doherty said the gardaí would be on the ''wrong side of history'' over their decision not to allow the public entry to the courts.
Ms O'Doherty, Mr Waters and a third person were allowed into Court 25 for the hearing. Their supporters clapped as they were let through and shouted ''Go Gemma''.
Gardaí advised members of the public outside to return to their homes under Section 4 of the Health Act 1947.
They said they interacted with a number of people, some of whom terminated their journeys and left the area.
No arrests were made.
In a statement, gardaí said a senior investigating officer had been appointed to oversee the investigation of any breaches of the Health Act 1947 and also any breaches relating to the temporary Covid-19 restrictions.
Supporters of Gemma O'Doherty and John Waters continue to wait outside the high court as case is up for mention over challenge to Covid-19 laws @rtenews pic.twitter.com/Qy1ybittX0
— Dimitri O'Donnell (@dimitriodonnell) April 28, 2020
A file will be sent to the Office of the Director of Public Prosecutions.
Mr Waters and Ms O'Doherty's application for permission to bring a challenge against laws will be heard before a High Court judge next week.
Mr Justice Charles Meenan fixed the hearing of Ms O'Doherty and Mr Waters' application for permission to bring the challenge for next Tuesday 5 May.
The State, represented by Patrick McCann SC, said it was opposing the application for leave and that the claims are not arguable.
The legislation challenged includes the 2020 Health Preservation and Protection and Other Emergency Measures in the Public Interest Act, the 2020 Emergency Measures in the Public Interest Act Covid-19 Act, The 1947 Health Act (Affected Areas) Order.
Their proceedings are also aimed at striking down temporary restriction regulations brought due to Covid-19 under the 1947 Health Act.
Mr Waters said the case was "one of the most important in our history" and repeated concerns he had previously expressed about any attempt to delay the hearing of the action.
During the hearing, Ms O'Doherty said that she believed her and Mr Waters' claims are arguable, and the court should have already granted the applicants leave.
Inviting the court to grant permission, she said that the people of Ireland are under "mass house arrest" and claimed that gardaí were "using guns" to frighten people.
After the hearing, Ms O'Doherty and Mr Waters left the court to cheers and applause.
However, a number of their supporters failed to abide by social and physical distancing guidelines.
Outside the court, Ms O'Doherty said ''Covid-19 is no threat to the vast majority of people" and that ''lockdown is endangering the health of the Irish people''.
She added that this is happening because the public are being ''denied sunshine, Vitamin D and C, the vital natural things that we need to keep healthy and alive''.
The pair have said they will continue their legal challenge to have the Covid-19 laws struck out.
