Searches have been carried out at properties in the Ballymena and Randalstown areas as part of an anti-drugs operation by the PSNI.
Police say their enquiries are continuing following the local searches carried out this week.
Detective Inspector Sean Taylor explained: “Officers have also searched properties in Randalstown and Ballymena and our enquiries are continuing.”
Detectives from Reactive and Organised Crime Branch seized an estimated £300,000 worth of herbal cannabis in Newtownabbey on Thursday and a 30-year-old man was arrested.
Det. Insp Tayor added: “This is the latest in a series of unrelated drugs seizures this week which brings to total value recovered since Monday to more than £1 million.
“We are aware of the threat posed by illegal drugs and are determined to use every opportunity to take these substances off the streets and bring anyone involved in their sale, supply or distribution before the courts.”