Five men who had swallowed pellets of drugs were arrested at Dublin Airport yesterday.
The five - a 45-year-old British national resident in Ireland and four Romanian nationals aged 25, 26, 52 and 53 - had arrived in Ireland on a flight from Madrid.
When officers questioned the men, two of them admitted to swallowing pellets of drugs.
The men were arrested and handed over to Dublin Airport gardaí and x-rays confirmed the suspicions of the officers.
The five were detained in garda custody and by noon today they had passed over 600 pellets of cannabis resin.
It is estimated that the final quantity of drugs will be in the region of 5kg, representing a potential street value of €60,000.