Update May 13: Alan Ryan has been located.
May 11: Gardaí are asking for help to find a missing teenage boy.
Alan Ryan, aged 17, has been missing from his home in Dublin 8 since last Wednesday, May 5.
He is described as being five feet, five inches tall with short brown hair, slim build and blue eyes.
When last seen Alan was wearing a grey long-sleeved tracksuit top and grey tracksuit bottoms.
Anyone with information on his whereabouts are asked to contact gardaí in Kevin Street on 01 666 9400 or the Garda Confidential Line on 1800 666 111.