Police are appealing for help in locating missing 17-year-old Sean Carroll McClelland.
The teenager has gone missing from the Warrenpoint area.
A post on PSNI Newry and Mourne Facebook site said he is 5 foot 8 ins tall and slim with short hair.
"He was last seen wearing a navy Adidas hoody, grey tracksuit bottoms and green Nike trainers," adds the post.
"Any sightings please contact us on 101 and quote CC1456 of 26/08/18.
"Sean, if you see this, please make contact with your family or us to let us know that you’re safe."