Two people have now died after a flyover collapsed in the Brazilian city of Belo Horizonte.
Nineteen people have also been injured in the accident, which trapped a commuter bus, two trucks and a car.
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Dashcam footage captured the tree crashing down onto 40-year-old Sarah Robb's BMW just after she left her home in Syston on Thursday.
The teenagers, aged 19 to 15, appeared in custody at Westminster Magistrates' Court on Saturday, supported by their families.
Labour must "broaden its reach" in order to win votes off the Conservatives, deputy leader Tom Watson has said.