An Armenian plane en route to Syria was forced to land in the eastern Turkish city of Erzurum this morning by Turkish authorities.
Officials from the Turkish prime minister's office said the plane was carrying humanitarian aid and was on its way to Aleppo. A Foreign Ministry official said it would be allowed to continue its journey if nothing else was found on board.
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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.