Flowers are already being laid in remembrance of an eight-year-old boy who died on Monday evening.
The boy, who has not yet been named, is believed to have fallen from his bike after cycling down the hill towards Masefield Avenue, Borehamwood.
He was taken to Barnet General Hospital at around 5.30pm but died shortly after arrival.
Police are continuing their investigations into the accident but say they are not looking for anyone else.
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