It follows the search of a car in Portadown on Monday, July 23.
Detective Inspector Craig McCamley said: “Officers stopped a grey coloured BMW car as it was driving along the Armagh Road in Portadown at around 1.30pm on Monday afternoon.
“Whilst speaking to the driver, a smell of cannabis was noted by the officers, who proceeded to carry out a full search of the car.
“Cannabis with a street value of around £30k was found in the boot of the car.
“The male driver of the car, and the female passenger, both aged 21, were arrested on suspicion of a number of drugs related offences and taken into custody where they remain today, assisting with police enquiries.
“The BMW car was seized and a number of further items were recovered in follow up searches at two houses.
“A large quantity of illegal drugs has been taken off our streets as a result of the excellent police work carried out by the officers involved.
“We will continue to seize drugs and arrest those involved in their supply and use.
“I would ask anyone with any information which can help us to contact their local police on 101 or Crimestoppers anonymously on 0800 555 111.”