Gardaí are looking for an 18 year old boy who's been missing from the city since Friday.
Aleks Malinowski, who's from Clondalkin, is 5 ft 8 inches tall and of slim build.
He has short brown hair with a line shaved into the left side of his head.
He's believed to be wearing a green and black sports jacket, olive green tracksuit bottoms, black shoes or boots and a navy Adidas woolly hat. He may also be carrying a black Timberland bag.
Anyone who's seen Aleks or who can assist in locating him is asked to contact Clondalkin Garda Station.