A serving police officer may have been the target of a hoax bomb alert, the Police Service of Northern Ireland (PSNI) has said.
A suspect device was found at Evish Square in Strabane, County Tyrone, shortly after 09:00 BST on Tuesday.
Army bomb disposal experts examined the device and later declared it a hoax.
On Wednesday, the police said one line of enquiry was that the hoax device was directed at a property frequented by a serving officer.
Police also said a 39-year-old man was arrested on Wednesday in Strabane and was being held on suspicion of terrorism offences, placing an article causing a bomb hoax and criminal damage.
Officers also seized a vehicle and other items during a search in the town.
A number of homes were evacuated and roads closed during Tuesday’s alert which ended at around 21:30 BST on Tuesday.
It is the third serious incident in the area in the last three years.
