An Algerian official says 110 passengers are aboard a missing plane travelling from Burkino Faso to Algeria.
Spanish operator Swiftair, which is thought to own the plane, also said six crew were on board the plane, bringing the total to 116.
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The operation to recover the unexploded bomb near the Houses of Parliament let to disruption in central London overnight.
Southern parts of England and Wales will see sunny skies after a frosty start.
A police spokesman said the incident in the Bourke Street Mall on Friday was not related to terrorism.