A grow house was discovered following searches
Gardaí have arrested four men following a seizure of cannabis plants.
The Garda National Drugs and Organised Crime Bureau, the Special Crime Task Force and local drugs units carried out a number of searches on Friday.
During the course of these searches, a cannabis grow house was discovered.
It was part of an intelligence-led investigation into the sale and supply of drugs in the Castlebar, Nenagh and Dundalk areas.
The plants are worth an estimated €200,000.
The four men arrested in connection with the investigation are aged 29, 37, 38 and 45.
They are currently detained at various garda stations under Section 4 of the Criminal Justice Act.