Detectives investigating the fatal stabbing of Bubacar Jabbie Dukureh have made five arrests.
Two men aged 18, two boys aged 17 and one aged 15 were arrested on suspicion of murder on Thursday following warrants in east London.
They remain in custody at an east London police station.
Bubacar, 17, was attacked in Walthamstow on October 23, 2020.
Officers were called at 9.20pm to Westbury Road after Bubacar was found suffering from a stab injury. He was treated by paramedics, however despite their best efforts, was pronounced dead at the scene.
A post-mortem examination held on October 27 established the cause of death as a stab wound to the chest.
Detective Inspector Joanna Yorke, from the Met's Specialist Crime Command, said: "This was a senseless and violent attack on a teenager on the streets of London.
“Our team has been working hard to establish the full circumstances around the incident and this is a significant update in the investigation.”
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