Update 25/06/18, 9.05am: Damien Cullen has been located safe and well.
The gardaí have thanked the public for their assistance.
Original story 23/06/18: Gardaí are seeking the public's help in tracing 16-year-old Damien Cullen
Damien is missing from Kilkenny since June 22.
He was last seen in St Luke's Hospital, where he was a patient.
Damien is 5'6'', thin build with short brown hair.
When last seen he was wearing an orange t-shirt, wine-coloured hoody, grey tracksuit bottoms and black runners.
Anyone with information is asked to contact Kilkenny Garda Station on 056 777 5000 or any Garda Station.