Traffic officers are investigating a crash involving a vehicle which was being pursued by police in New Cross, south London.
A 13-year-old girl died at the scene, her brother and parents are currently in hospital recovering from their injuries.
ITV Daybreak correspondent Jonathan Swain reports:
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The decision represents something of a victory for the president who will now be able to enforce most of his controversial 90-day ban.
Cool in the north, warmer air to the south
Police have warned the drug, known locally as "pink champagne", could be deadly.