Police have cordoned off an area in Ealing Broadway after a young man died in a gang fight and another remains in hospital after he was thought to have been stabbed.
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The twins cubs, which were born in June, have been named Bert and Ernie after characters from Sesame Street.
The two victims died from their injuries in hospital after the explosion in Hertfordshire.
Investigations are continuing into the cause of the crash in chigwell which killed both people on board.