Three men have been arrested after heroin worth 650,000 euros was seized by gardai.
The men were detained in an operation on the Crumlin Road in Dublin and a large quantity of the drugs was recovered in a follow-up search.
Gardai raided an apartment in West Park, Rathcoole, Co Dublin, after the arrests and found heroin, a hydraulic press, bagging materials and scales.
The men were being questioned at Irishtown, Kevin Street and Kilmainham Garda stations.
In a second drugs raid one man was arrested and cannabis plants worth about 90,000 euro were seized by gardai.
The man, in his 30s, was detained after two adjoining houses on Quill Road, Kilmacanogue, Co Wicklow, were searched.