ISIS Claims Responsibility For Deadly Paris Attack

By Paul Cruickshank, Ralph Ellis and Jim Bittermann

PARIS (CNN) -- A man who shot a Parisian police officer to death on the Champs-Elysees Thursday night was known to French security services for radical Islamist activities, a source close to the investigation told CNN.

The suspect, who was shot dead by French police, was the subject of a "Fiche S" surveillance file and was on the radar of the French domestic security service DGSI, the source said.

The source said French investigators now believe this was in all likelihood a terrorist attack. They believe there was just one attacker, and the danger is likely over, the source said.

The Islamic State of Iraq and Syria claimed responsibility for the attack, CBS News reports.

The shooting happened about 9 p.m. local time (3 p.m. ET) when a car stopped at 102 Champs-Elysees in front of a police van, Interior Ministry spokesman Pierre Henry Brandet said.

A man emerged from the car and opened fire on the van with an "automatic weapon," killing one officer instantly, he said. The man "then ran away, managing to shoot and  wound two other policemen. Other policemen engaged and shot and killed the attacker," Brandet said.

The shooting shut down the Champs-Elysees, an area normally teeming with tourists, and comes three days before French voters start elections for a new president.

Security has been tight in France because of the vote. Just two days ago French authorities arrested two men in Marseille who were allegedly planning an attack in a run-up to the election.

French President Francois Hollande said anti-terrorist forces are leading the investigation.

"The people who were present have been evacuated and we are convinced that the leads which point us to this case, and which will allow us to uncover the truth, are of a terrorist nature," he said.

At least three underground train stations of the Paris Metro -- the Champs-Elysees-Clemenceau, George V and F. Roosevelt stations -- have been "closed off" near the site of the police operation on the Champs-Elysees in Paris, BFMTV reported.

Paris resident Daoud Kal, 29, said he was walking in the area near a metro station when he heard four to five shots. He looked around, but couldn't identify where the shots were coming from. People panicked and ran away from the scene and he joined them.

The CNN Paris bureau is on this street and staffers reported hearing a dozen shots. At least 20 police vehicles were seen on the street.

Officers could be seen forcibly removing innocent citizens from the area as they attempted to get them to safety.

President Donald Trump, speaking at a news conference in Washington with the visiting Italian Prime Minister, offered condolences to the people of France after the shooting, saying it "looks like another terrorist attack."

"What can you say? It never ends," the President said.

The Champs-Elysees is a main road lined with restaurants, cafes, exclusive designer boutiques and tourist shops. At one end is the Arc de Triomphe, surrounded by a several-lane-wide roundabout, and the other end stops at the Place de la Concorde, known for its obelisk monument.

The presidential palace, the Elysee, is a few blocks away.

French police tweeted, "Police intervention underway in the area of the #ChampsElysees avoid the sector and follow the instructions of the police forces."

The U.S. State Department put out a cautionary tweet, saying: "If you're in #Paris, monitor local news. #ChampsElysees has been closed. Authorities are telling people to avoid the area after a shooting."

The shooting comes three days before French general elections and Paris was already in a state of heightened alert. French politicians immediately reacted on social media.

French far-right presidential candidate Marine Le Pen tweeted, "My emotions and solidarity for the police, once again targeted."

Conservative French presidential hopeful Francois Fillon tweeted, "Paying homage to police who give their lives to protect ours, #ChampsElysees."

Prime Minister Bernard Cazeneuve tweeted: "Paying homage to the policeman killed on the champs elysees. Thoughts are with his family. Solidarity with his injured colleagues and those close to them."

Former French President Nicola Sarkozy's tweeted: "To our law enforcement: support, strength, courage. They are paying again a heavy price. Our Nation's tribute must be total NS."

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