A man has been arrested on suspicion of possession of a firearm or ammunition in Lurgan on Monday evening.
Specially trained firearms officers were tasked to a property in the Princes Street area of the town.
The 50-year-old remains in police custody “assisting with enquiries”.
A police spokesperson said: “Specially trained firearms officers attended the incident and a Conducted Energy Device (CED) was deployed to prevent harm to the person and officers.
“As is normal procedure, the Police Ombudsman’s Office has been informed of the incident.”
