A vehicle has been damaged after a pipe bomb was thrown at a house in Newry, County Down, on Sunday evening.
Police said they were investigating a report of criminal damage after the incident at about 19:20 GMT in Watsons Road.
No injuries were reported but officers said it was a "reckless attack".
A number of residents who had to leave their homes during the police operation have been allowed to return and the road has reopened.
In a separate security alert in Maghera, County Londonderry, an item described as an elaborate hoax was taken away for forensic examination.
Its discovery prompted a security alert in Sunnyside Drive.
Residents have also returned to their homes and Sunnyside Drive has reopened.
Police in Maghera thanked the community for their patience and understanding during the incident.