The teenager, who has not been named, was shot in the leg as he walked in a public park in Marske on 27 May.

Surgeons at the James Cook Hospital in Middlesbrough, removed a .22 pellet which was lodged in his left thigh.

Police are trying to trace two youths who were seen in the area on a motocross-style motorcycle at the time of the attack at 1930 BST.

A spokeswoman for Cleveland Police said the boy needed six stitches to his leg wound.

She added: "Two youths were seen in the area at the time, riding a light-coloured motorcycle.

"It is not known if they had anything to do with the incident.

"But we would urge anyone who saw these youths to contact us."