One policeman killed, another wounded in Paris shooting

Paris: One policeman was killed and another wounded in a shooting incident in central Paris on Thursday night, a police source said.
The person who fired on police on the Champs-Elysees, one of the world's most prestigious boulevards, has been killed, the source said.
Police authorities called on the public to avoid the area.
A Reuters reporter saw a helicopter flying low over central Paris, apparently part of a follow-up police operation