Update Apr 27: Jamie O'Neill has been found safe and well.
Earlier: Gardaí are appealing for help to find a teenager who has gone missing in Donegal.
Jamie O'Neill was last seen on Wednesday at his home in Bonagee, Letterkenny.
The 17-year-old is five foot nine inches tall, has dark brown hair and brown eyes.
He was last seen wearing a dark-coloured tracksuit.
Anyone with any information is being asked to contact Letterkenny Garda Station on (074) 9167100, The Garda Confidential Line 1800 666 111 or any Garda Station.