A prison officer has been charged with 16 offences including conspiracy to supply class A, B and C drugs, police say.
The 23-year-old man was detained at Maghaberry prison on Friday morning as part of an investigation by the PSNI into the trafficking of prohibited items into Northern Ireland's largest jail.
He faces a total of 16 offences including conspiracy to supply class A, B and C drugs, possessing class A, B and C drugs with intent to supply and misconduct in public office.
He is due to appear at Lisburn Magistrates' court on Monday morning.
Two women, aged 55 and 26, who were also arrested as part of the same investigation, have been released on bail pending further enquiries.
They were detained after searches of properties in Lisburn and Dungannon.
A quantity of drugs and associated paraphernalia was also recovered during the operation.