This week is missing persons week – and police are appealing for assistance to locate a missing 17 year old boy from the Lismore and Mullumbimby areas.

Jacob Knight, aged 17, was last seen in Mullumbimby on Friday, July 31.

Police have concerns for Jacob's welfare and have commenced an investigation to locate the missing person and are seeking community assistance.

Jacob Knight is described as being caucasian appearance, approximately 165cm to 170cm tall, medium build and brown hair.

Anyone who sees Jacob, or believes they know Jacob's whereabouts, is urged to contact Byron Bay Police on 02 66859499.

Anyone with information about this incident is urged to contact Crime Stoppers: 1800 333 000 or https://nsw.crimestoppers.com.au

Information is treated in strict confidence