Mason was last seen on Bridge Street, Boyle on Saturday evening. It is believed he got into a white Renault Kadjar car with Northern registration number plates on Saturday at around 6.10 pm.
Mason is described as being approximately 6 foot 1 inches in height with a slim build, dare brown hair and brown eyes. When last seen, he was wearing a black hoody, black tracksuit bottoms and black runners.
Anyone with any information on Mason’s whereabouts are asked to contact Boyle Garda station on 071-9664620, the Garda Confidential Line on 1800 666 111, or any Garda station.