A lone gunman is believed to have carried out four attacks since Friday including a shooting in the Paris offices of a left-wing newspaper which has left one person seriously injured.
- A lone gunman enters the offices of 24-hour news channel, BFMTV, on Friday and reportedly fires two shots before declaring: "Next time, I won't miss."
- On Monday, a man enters the offices of left-wing newspaper Liberation in central Paris.
- He shoots and seriously wounds a photographer's assistant, who is fighting for his life, before fleeing.
- About 90 minutes later a lone gunman fired at least three shots into the lobby of the headquarters of Societe Generale - a bank. A window was shattered but nobody was hurt.
- A lone gunman then hijacked a car and forced the driver to take him to the Champs-Elysees area before vanishing into the crowd.
Paris prosecutor Francois Molins said: "Given the similarities between these four cases...we are favouring the hypothesis that there is one author. The suspect is of European type, with salt-and-pepper hair and possibly 2 or 3 days of stubble."
More top news
A British scientist says the age women may be able to conceive children could soon be significantly extended.
Simon Cowell admitted he was "so embarrassed" after his shirt burst open during an X Factor audition.
Following the promise of further powers for Scotland, David Cameron is now talking about a new deal for the other home nations.