or someone else. now i'm being told -- sorry. this is a developing story. one policeman has been killed. one policeman has been killed and another wounded and an attacker has been taken down. let me go back to melissa bell in paris, france, for cnn. melissa, we're now learning that oe of the policeman has been killed and that the attacker has been taken down. >> reporter: right. what we didn't know is whether that sound we heard 45 minutes ago, attempted assumed were fireworks and now we realize were gunshots, was that on the part of the man attacking or the police dealing with an attacker in the middle of the champs-elysees. clearly, a serious incident here in the heart of paris. the scene, as you say, the entire champs-elysees, entirely closed down. this is just with a couple of days to go before france's presidential election and in a country that has been on edge and under a state of emergency