He as last seen in the Douglas area yesterday
Cian is described as being 5'9" inches in height with a slim build, brown eyes and brown hair.
Gardaí and Cian's family are concerned for his well-being.
Anyone with information on his whereabouts is asked to contact Togher Garda Station on 021 4947120, the Garda Confidential Line on 1800 666 111 or any Garda Station.
