Revenue officers at Shannon Airport seized 4.5kgs of herbal cannabis with an estimated street value of €90,000 during routine operations last Friday.
The drugs were found concealed in a parcel labelled as "clothing" which had originated from Spain. The illegal drugs were destined for an address in Carlow.
Investigations are ongoing.
If businesses or members of the public have any information regarding drug smuggling, they can contact Revenue in confidence on Confidential Phone Number 1800 295 295.