Gardaí are thanking the public for their assistance and say that Killian has been found safe and well this evening.
Gardaí are seeking the public's assistance in tracing the whereabouts of 15-year-old Killian Dempsey missing from Mullingar since October 10.
Killian was last seen in Mullingar on Saturday at approximately 4.45pm.
Killian is described as being 5 foot in height, of medium build with blue eyes and short brown hair.
When last seen Killian was wearing a black and white striped zip up hoodie, navy coloured Nike Air tracksuit bottoms and navy runners.
Gardaí are concerned for Killian's safety and welfare and anyone with information is asked to contact Mullingar Garda Station on 044 9384000, The Garda Confidential Line, 1800 666111 or any Garda Station.