Four men have been arrested in connection with the seizure of an estimated €200,000 worth of cannabis plants.

The plants were discovered following searches by gardaí investigating the sale and supply of drugs.

The searches were carried out in Castlebar, Co Mayo; Nenagh, Co Tipperary and Dundalk, Co Louth.

The men who are aged 29, 37, 38 and 45, are being held at various garda stations.