A man who killed a police officer on the Champs-Elysees Thursday night was known to French security services for radical Islamist activities and had shot and wounded an officer in the past, a source close to the investigation told CNN.
The terror attack in European nations didn't stop as a new ISIS member open fired on historic Champs-Elysees Shopping District on Thursday.
In November, 2015, Paris was rocked by near simultaneous gun-and-bomb attacks on entertainment sites, in which 130 people died and 368 were wounded.
Qassemi described terrorism is "the first and most immediate threat against the global peace, stability and security", stressing that the scourge "cannot be eliminated without a consensus as well as a firm and honest will among members of the worldwide community".
Candidates canceled or rescheduled final campaign events ahead of Sunday's first round vote.
Police tape surrounded the quiet, middle-class neighborhood in Chelles, and anxious neighbors expressed surprise at the searches.
Meanwhile, French Ministry of Interior Spokesman Pierre-Henry Brandet told BFMTV that the assailant "got out of the vehicle and shot at the police vehicle with an automatic weapon, killing one policeman instantly".
The Champs-Elysees gunman who shot and killed a police officer just days before France's presidential election was detained in February for threatening police but later freed.
There were other reports it may have been an armed robbery gone wrong, but police have launched a terrorism inquiry and all indications are that it is terror-related.
France is now in a state of emergency and earlier officers closed a major road after they found a suspicious package.
Hours after the incident, Daesh claimed responsibility for the attack via its Amaq news agency.
The Islamic State reported through its Amaq news agency that the attacker was Abu Yusuf al-Beljiki, which was confirmed by the USA organization that monitors terrorists' activity online, SITE Intel Group. One nun escapes and gives the alert, and police shoot both attackers as they leave the church.
Bystanders raise their arms after a shooting in Paris.
In Thursday's attack, French Interior Ministry spokesman Pierre-Henry Brandet said on BFM television that a man came out of a auto and opened fire on a police vehicle.
Police and soldiers sealed off the area, ordering tourists back into their hotels and blocking people from approaching the scene. Video showed the normally busy avenue, one of the most famous streets in the world, empty of residents and tourists but teeming with security officers at 9:30 p.m.
"They were running, running", said 55-year-old Badi FtaÃ¯ti, who lives in the area. "Some were crying. There were tens, maybe even hundreds of them".
President Francois Hollande is due to speak after holding a crisis meeting with Prime Minister Bernard Cazeneuve and Interior minister Matthias Fekl.
At a news conference in Washington with visiting Italian Prime Minister Paolo Gentiloni Silveri, he said: "It looks like another terrorist attack".
In a televised address, outgoing French President Francois Hollande called the shooting the work of terrorists.