Three men and a woman were arrested after gardaí from the National Drugs Unit seized 1kg heroin worth around €200,000 during a drugs handover in the Naas Road area of Dublin.

Three of those arrested are from Limerick and the fourth is believed to be a significant drug trafficker from Dublin.

Gardaí believe that the heroin was destined for a criminal gang in Limerick and that three people had come from there to collect it.

All four are aged between 28 and 42 years old and are to appear before Killmainham Dublin District Court tomorrow morning charged in relation to a drug seizure in Dublin.