Latest: Islamic State: We carried out deadly Champs Elysees attack

The Islamic State group has claimed responsibility for the attack that killed a Paris police officer.
- A police officer has been killed and two others injured in a suspected terrorist shooting in the centre of Paris.
- The Islamic State extremist group has claimed responsibility for the attack.
- French officials said the suspect in the attack was previously flagged as an extremist.
- The incident comes days before the French election, which is to take place on Sunday.
- The world-famous Champs-Elysees avenue has been sealed off and nearby stations on the Paris Metro have been closed.