Updated

President Donald Trump says Thursday's fatal shooting in Paris "looks like another terrorist attack."

Paris police say a gunman has killed a police officer and wounded another before being killed himself in an attack on the Champs-Elysees shopping district.

It was unclear how Trump concluded that terrorism may have been a factor. Paris police haVE yet to announce a motive,

Trump is also offering condolences from the U.S. to the people of France.

He calls the attack a "terrible thing" and says "it never ends." He says people must be strong and vigilant.

The attack came three days before the first round of balloting in France's presidential election.