A quantity of drugs and a substantial amount of cash has been recovered from a property in Omagh.
A search of the house was carried out in the town on Saturday.
One male was arrested and is assisting police with enquiries.
Later the same evening suspect Class B drugs were also recovered from three people in the town.
One male was arrested for being under the influence of drugs and in charge of a motor vehicle. He has currently been released on bail while enquiries continue.