A viable pipe bomb has been found outside flats in Carryduff in Co Down.
The suspicious object was found at the door of the property at Doon Park in the Killynure area shortly before 9.30pm on Saturday.
A number of houses were evacuated while army bomb experts dealt the device.
“A motive for the incident has not been established,” A PSNI spokesman said.
Detectives at Castlereagh have appealed for information.