Kledjo Mena, 14, has been missing from Essex since Friday 7 June 2024 and is now thought to have travelled to the Medway area.
He is described as being around 5 foot 4 inches and was last seen wearing a black beanie hat, a black coat, blue jogging bottoms and white Nike trainers.
Anyone who sees Kledjo or knows where he is should call 999 quoting reference 13-0057.