A controlled explosion has been carried out on a pipe bomb type device which sparked a security alert on the Antrim Road in Glengormley.
Ammunition Technical Officers have declared the device as viable following a controlled explosion.
Detective Inspector Lenaghan said: “We would like to thank the local community for their patience and understanding during this time.
“Detectives from Antrim CID are following several lines of enquiry and the device will be removed for further examination.
“At this stage we are uncertain as to how long this device has been in situ and are appealing for anyone with information about the incident that may assist in our investigation to contact Detectives at Antrim CID quoting reference number 562 of 25/1/23. A report can be made using the online reporting form via www.psni.police.uk/makeareport . Information can also be provided to Crimestoppers anonymously on 0800 555 111 or online at www.crimestoppers-uk.org.”