More than €4m worth of heroin has been seized in Co Louth.
Gardaí from the National Drugs Unit stopped and searched an articulated truck on the M1 near Drogheda last night.
A 40-year-old man and 43-year-old woman were arrested at the scene, while another man, also in his 40s, was arrested in a follow up search.
They are being held at Coolock and Drogheda garda stations under drug-trafficking legislation.