A security alert in the Londonderry has now ended.
A number of homes had to be evacuated in the Carnhill area of the city on Sunday night.
Police put up a number of cordons in the area and army bomb experts also attended the scene.
An object at the centre of the alert was declared an elaborate hoax and families have now returned to their homes.
Inspector Mullan said: “I want to thank local people and the wider community for their patience and understanding throughout the operation, which was necessary to ensure the safety of local residents, and those travelling in and around the area."
“I would appeal for anyone with information about this incident,or who saw any unusual activity in the area to contact police on the non-emergency 101, quoting reference 1221 of 19/11/17. Alternatively, information can be passed anonymously through the Crimestoppers charity on 0800555 111.”