Officers are appealing for information to help find missing 16 year-old Harry Smith from Catterick Garrison.
Harry was last seen by his friends outside the Co-op in Colburn at 10pm on Sunday 1 October 2017.
It is believed Harry was wearing a black Jack Jones Hoody, dark coloured bottoms and dark coloured Nike trainers.
Officers are becoming increasingly concerned for Harry’s welfare and are appealing for anyone who has seen him, or who has any information about his whereabouts, to get in touch.
Call North Yorkshire Police on 101, press 1 and pass information onto the force control room.
Please quote reference number 12170176370 when passing on any information.