The Ballymena Road, Ballymoney, has now re-opened following a report of a suspicious object found close to residential premises in the area.
ATO have finished at the scene and a controlled explosion has been carried out on a viable device which has been taken away for further forensic examinations.
Residents who had been evacuated during the incident have now been allowed to return to their homes.
Police would appeal to anyone who witnessed the incident or anyone with any information to contact them on the non-emergency number 101. Or if someone would prefer to provide information without giving their details they can contact the independent charity Crimestoppers and speak to them anonymously on 0800 555 111.