Although officers have information to suggest that Ewan has not come to any harm, they still need to locate him to check that he is safe and well.
Ewan is known to have links to Scarborough, Stokesley and Ripon and it is believed he has been in Harrogate over recent days.
Officers are appealing to people in those areas to be vigilant and report any sightings of anyone matching Ewan’s description.
Ewan is described as white, around 5ft 7in tall, with a slim build, brown shaven hair and blue eyes. When he was last seen he was wearing a dark-coloured hooded-top and black tracksuit bottoms.
Anyone with any information about Ewan Corbett’s whereabouts is urged to contact North Yorkshire Police on 101 – select option 1 – and pass information to the Force Control Room.