Police and the family of 15-year-old Marc Shields are growing concerned for his wellbeing.
Marc was last seen at his home in the Hawthorn Grove area of Derry City on Thursday morning last, 25th.
He is described as being 5ft 10ins tall and of a slim build. He has short brown hair.
Anyone who has seen Marc or knows if his present whereabouts is asked to contact police at Strabane Road on the 101 non-emergency number.