Update 5pm: The body of 18 year old Stephen Sweetman has been found.
Gardaí in Dublin are seeking the public's assistance in tracing the whereabouts of a missing 18-year-old.
Stephen Sweetman was last seen in Clonard, Balbriggan at around 4pm on Wednesday.
He is described as being 6'2" tall, of athletic build with short brown hair and brown eyes. When he last seen he was wearing a bright blue hooded sweatshirt, navy Canterbury tracksuit bottoms and white trainers with fluorescent yellow markings.
Anyone who has seen Stephen or who can assist in locating him is asked to contact Balbriggan Garda Station on 01-8020510, the Garda Confidential Telephone Line 1-800-666-111 or any Garda Station.