Gardaí are seeking the public's help in tracing the whereabouts of 16-year-old Alannah Corrigan.
She was last seen in Dun Laoghaire in Co Dublin on Thursday.
She is described as being 4'7'' in height, of slight build and with black hair.
Anyone who has seen Alannah, or who can assist in locating her, is asked to contact Dun Laoghaire Garda Station on 01-666-5000.
They can also contact the Garda Confidential Telephone Line at 1800-666-111 or any Garda Station.