DUBLIN, Ireland - A teenage girl missing for four days in Dublin is now the subject of a search by gardai.

On Friday, a missing persons alert was raised for 18-year-old Katelyn Comerford who has not been sighted since she went missing in the Dublin 8 area on Monday.

Katelyn is known to frequent Dublin city centre and the Balbriggan areas.

She is described as being 5 feet 4 inches in height with a slim build.

Katelyn has brown, shoulder length hair and blue eyes.

Anyone with information on Katelyn's whereabouts is asked to contact Kevin Street Garda Station on 01 666 9400, the Garda Confidential Line on 1800 666 111, or any Garda Station.