Two pictures of the gunman suspected of carrying out the shootings at the offices of French newspaper Liberation and a bank have been released.
Police believe the lone gunman is responsible for the attack at the newspaper in Paris as well as three other incidents.
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Higher food and petrol prices are expected to send inflation to its highest level in 28 months when official figures are released later.
The Prime Minister will detail her 12-point plan on negotiating Britain's exit from the European Union during a speech on Tuesday.
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