Gardaí in Naas are appealing to the public for help to locate 17-year-old, Mario Tache.
The teenager was last seen on Main Street, Naas on June 11.
However, there have been a number of unconfirmed sightings in the north Dublin area in recent weeks.
The 17-year-old is from Balbriggan, Co Dublin.
Mario is 5ft 8” in height, with short black hair, brown eyes, and of slight build.
Anyone with information is asked to contact Naas Garda Station 045-884300 or the Garda Confidential Line 1800 666 111.