A controlled explosion was carried out on the suspect device found at Feeney yesterday, Wednesday.
The security alert is expected to end sometime today.
Meanwhile, police say the item found during the alert was examined and found to be a viable device.
Detective Inspector Philip Montgomery, Serious Crime Branch said: “I would ask anyone with any information about this incident to contact Police 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.”