Gardaí are appealing for help in tracing the whereabouts of a teenager from Drogheda, Co Louth.
Sixteen-year-old Nathan Mulligan has not been seen since Tuesday night, when he was on West Street in the town.
Nathan is described as being 6 foot in height, of athletic build with brown eyes and black hair.
When last seen he was wearing a black top, black/grey tracksuit bottoms and black runners.
Gardaí are concerned for his welfare and are urging anyone with information to contact 041 9874200.