Gardai are questioning a man after a cannabis grow house was discovered in the north inner city.
It was found in an flat on Dorset Street yesterday.
The drugs bust was part of an ongoing operation by gardai targeting drug dealing in the area.
A flat on Dorset Street was searched yesterday and a grow house with 167 cannabis plants was found.
The haul is worth over 133 thousand euro.
Officers also found what they described as a sophisticated cultivation system.
A 34 year old man was arrested at the scene.
He's being held at Store Street gardai station where he can be detained for up to 24 hours.
