POLICE are extremely concerned for a missing 15-year-old boy.

Matthew Tuner left his home in Lindfield, Mid Sussex around 6.45pm on Friday (August 16) but police believe he may have travelled into Brighton.

He is white, 5’ 2”, of stocky build, with blond hair and was last seen wearing a grey tracksuit, black trainers and a black Puffa jacket.

Police are appealing for anyone in the Brighton, Hove or Mid Sussex areas to keep an eye out for the teenager.

Matthew can become agitated when approached by people he does not know. If you see him please dial 999 immediately.