The PSNI has issued a renewed appeal for Joseph Colhoun who has been missing for 12 days.
The 18-year-old was last seen on October 3 in the Derry area.
Also known as Jody Burns, he is described as 5’8”, with medium build, fair hair and blue eyes.
Police say he may have links to the Republic.
“If anyone has any information please call 101 & quote reference number 1217 of 14/10/23,” the PSNI adds.