A murder investigation is underway in East London, after a 16-year-old boy was stabbed to death in the street.
Ajmol Alom has been described by his headteacher as a "star pupil with a bright future ahead of him". A second teenager who was also attacked is being treated in hospital.
Police have described it as an unprovoked attack, as Ria Chatterjee reports:
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A lamp in the tower which houses Big Ben is to be switched off for the first time in more than 70 years.
Sir Bruce entertained audiences for more than seven decades.
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