Fares Maatou, 14, was attacked in his school uniform in Canning Town on Friday afternoon.
Cops have now charged a 14-year-old boy with murder and have made a fourth arrest into the fatal stabbing.
Despite the best efforts of the emergency services, Fares was pronounced dead shortly after 4:30pm outside of the pizza restaurant.
The Met Police said today: “Detectives have charged a boy with murder and made a fourth arrest as they continue to appeal for information about the events which led to the death of Fares Maatou.”
“Fares is believed to have been in possession of an e-scooter when he was attacked.”
“However enquiries are ongoing and officers must retain an open mind as to any motive.”