Junior, who has links to the Lewisham and Greenwich areas, is described as black; around 5ft 10ins tall with a slim build and short black afro hair. And was last seen wearing a light-grey, padded jacket with a hood, grey tracksuit bottoms and black trainers. He was possibly carrying a blue rucksack. It is not known if he had a change of clothes.
The police are appealing for Junior to contact them or his guardian to let them know he is safe and well.
They are also urging anyone who has seen him or knows of his where he is or might be to contact them, again so they can confirm he is safe and well.
Anyone that can assist police can contact the Missing Persons Unit in Greenwich on 020 8284 7713 / 7712, or police via 101.