"We are asking all residents to avoid the Champs Elysees area in order to allow police operations to be carried out in serenity", said Brandet, adding that police investigation into the motive of the attack is underway.
The attack happened when a auto pulled up next to a police van, with a gunman getting out and immediately shooting at officers who were guarding an area near the Franklin Roosevelt metro station.
Despite the gunman being killed, police are still on high alert and officers have been seen pointing their weapons at members of public as they clear the area.
The Islamic State group claimed the shooting, days before French presidential elections, via its Amaq news agency, naming the attacker as Abu Yousif the Belgian.
He then began running away and injured two other officers before getting shot in an exchange of fire with police.
Outgoing French President François Hollande said one bystander was also struck by gunfire.
Two police officers told AP the attacker had been flagged as an extremist, but offered no further details.
"We are suffering the consequences of a laxity that has continued for years", she said shortly before the shooting, promising to take a hard line against extremists and anyone suspected of being an Islamist. Also wounded was a female tourist.
He said: "I thought they were firecrackers".
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Yet, Kelly's comments come off as relatively lenient once contrasted against ones made by attorney general Jeff Sessions. Schiller told Fox News that DCMJ set up its demonstration on non-federal land near the Capitol.
French Interior Ministry spokesman Pierre-Henry Brandet said in televised remarks that the officers were "deliberately" targeted in the incident.
Police have searched a home in a suburb east of Paris believed linked to the attack.
France has become a target for a rash of Islamic terror attacks committed by either Mideast refugees, Islamists posing as refugees or young men who grew up in France and Belgium after their parent immigrated to Europe.
But it is claimed the "ISIS terrorist" was let out early following an appeal ruling, giving him the opportunity to carry out last night's deadly attack which has left one police officer dead.
Macron, a 39-year-old moderate whom other candidates have portrayed as too inexperienced to protect France against the terror threat, warned against any attempts to use the attack for political gain.
US President Donald Trump, speaking at a press conference in Washington, said the incident "looks like another terrorist attack" and sent his condolences to France.
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France has been under a state of emergency since November 2015, when more than 130 people were killed in a single night by coordinated terrorist attacks in Paris.