A prisoner has escaped from Cloverhill Court in the west of the city.
It's understood the inmate walked out of an unlocked cell yesterday.
The District Court is located on the same grounds as Cloverhill prison.
The prisoner in question was brought from the jail to the courthouse yesterday and was waiting to be brought before a Judge.
He's a Dublin man in his 30s and is facing a robbery charge.
It's understood while he was waiting to be called before the court, his holding cell door was unlocked and he simply walked out.
Gardai have been informed and are searching for the prisoner who remains at large this afternoon.
The Irish Prison Service has launched an investigation.