The Homicide and Major Crime Command are still trying to piece together the events of the previous evening into the early hours of the 1 March. We are in the early stages of this investigation and retain an open mind as to the motive of this ferocious attack.
Aaron and Josiah were in a black Fiesta in Montague Road and both were stabbed several times as they sat in the vehicle. The London Ambulance Service made a significant effort to save their lives but unfortunately both later died at the scene.
More top news
Young cancer sufferers got a surprise visit and were bowled over by One Direction's Niall Horan.
Scotland Yard has released figures which show there were 9,000 stabbings in London in the past year including 866 teenage victims.
Two women had to be rushed to hospital after the driver of a 'BMW' mounted the pavement in a hit-and-run crash.