Around 10,000 tonnes of recycled cardboard bales are on fire at the Smurfit Kappa paper mill in Birmingham, West Midlands Fire Service has said.
The service said crews and agencies are continuing to battle high winds but are "working extremely hard" to bring the blaze under control.
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People across France display the Tricolore in tribute to the 130 victims of the Paris attacks ahead of a memorial service in the city.