The High Court will hold an inquiry to establish if the detention of a woman in hotel quarantine is lawful.
Inbar Aviezer is taking a case against the State claiming she's being unlawfully held at one of the facilities.
Ms Aviezer is currently in quarantine at the Holiday Inn at Dublin Airport since Wednesday after arriving on a flight from Israel.
Her lawyers say she is fully vaccinated and has presented two negative PCR COVID-19 tests.
They argue she is being held unlawfully under Article 40 of the Constitution.
In court today, Justice Senan Allen directed an inquiry to take place to establish if that is the case.
It followed an admission by Senior Counsel Michael Cush, representing the Minister for Health, that in this specific case, Ms Aviezer is in detention.
There was no application for bail, with Senior Counsel Conor Power, who represents Ms Aviezer, saying he appreciated the circumstances were different in a hotel quarantine case.
Both sides agreed to make their submissions on the case tomorrow.
The judge directed that the matter be heard before the President of the High Court on Monday.