French President Francois Hollande is hosting an emergency cabinet meeting in Paris after an attack on the Champs Elysees left one policeman dead and another wounded.
A gunman was shot at the scene.
There's been a massive police response, and people were urged to evacuate one of the busiest thoroughfares in the French capital.
Reporter Peter Allen in Paris says the attack comes just three days before the first round of the French Presidential election.
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