Around £1.8 million worth of cocaine and cannabis was seized by police from a lorry at Belfast Harbour.
The vehicle was stopped and searched in the early hours of Saturday morning.
A 36-year-old man and a 31-year-old woman have been arrested on suspicion of possession of Class A and Class B controlled drugs with intent to supply.
Detectives from the Police Service of Northern Ireland’s Organised Crime Unit conducted the operation.
Detective Chief Inspector Richard Thornton is appealing to anyone with information about illegal drug use or supply, to call police on the non-emergency number 101.
Alternatively, you can submit a report online using our non-emergency reporting form via www.psni.police.uk/
“To anyone who thinks they might have a problem with alcohol and/ or drugs and would like to get help please visit www.drugsandalcoholni.info for information on support services near you.
“There is also a range of services available if you are affected by someone else’s drinking and/or drug misuse. Information on these services is also available on this website. These services are available to you regardless of whether or not your loved one is receiving help for their alcohol and/or drug problem,” he said.