The remains recovered from a cabin in Big Bear, California, have been positively identified as those of fugitive former Los Angeles policeman Christopher Dorner, the San Bernardino County Sheriff's Department said.
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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.