A teenager who died after being stabbed on a bus in broad daylight has been named.
Police launched a murder investigation after Derek Boateng,16, from Hackney, east London, died on Wednesday from multiple wounds inflicted at 3pm on Tuesday.
A 15-year-old boy has been arrested on suspicion of murder and remains in custody at a north London police station.
Derek was travelling on the route 393 bus near Highbury New Park in north London when he was attacked.
He was taken to an east London hospital by air ambulance but doctors were unable to save his life.
Next of kin have been informed and a post-mortem examination will be carried out in due course, Scotland Yard said.
Witnesses or anyone with information should call police on 020 8345 3734, or Crimestoppers on 0800 555111.