A police officer has died suddenly at a PSNI station in Portrush.
The officer had been in work on Friday morning when the incident took place.
QRadio news understands a firearm was involved.
A post mortem is expected to take place and investigations will begin.
Chief Superintendent Paula Hilman said: "Our thoughts and sympathies are with his family and friends.
"They have asked for privacy during this difficult time.
Education Authority boss hits out at criticisms of public services
Man in 90s dies following Co Down road crash
Police to increase patrols after second incident of shots being fired in Belfast
Woman charged over theft of campaigner’s car ‘must stay out of Belfast’
Bluetongue restrictions in Northern Ireland will be relaxed from Friday