Police are searching for 16-year-old Thomas Askew from Eastbourne.
Thomas has been reported missing having not been seen since Wednesday (March 24).
Although he has been in contact with family members, his whereabouts is unknown and there is concern for his welfare.
He is white, of slim build with dark brown hair which is long at the top. When last seen, he was wearing a black North Face jacket with a hood, grey tracksuit bottoms and black Nike Airforce trainers.
He is believed to be travelling around the Eastbourne area.
Anyone who sees him or has any information as to his whereabouts is asked to contact police online or by calling 101 quoting serial 422 of 26/03.