1. A gunman opened fire on a French police vehicle on the famous Champs-Élysées avenue in Paris on Thursday, killing one officer and injuring two other individuals, authorities said.

Christian Hartmann / Reuters

2. “A [police] car parked on the #ChampsElysees was targeted by an individual’s gunfire,” the Ministry of Interior said on Twitter. “A police officer was killed and two others were seriously injured. The individual was shot dead by law enforcement.”

Franck Fife / AFP / Getty Images

Ministry spokesman Pierre-Henry Brandet told BFM television that a man exited a car and opened fire on the police vehicle, “deliberately” targeting the officers.

There was “no other police operation underway” in the popular shopping district, he said.

Brandet told reporters the shooter’s background and motive have not been determined, but that the country remained on alert because of past terror threats.

Brandet confirmed counterterrorism investigators have been called to look into the shooting, and that the country remains on high alert. However, he said terrorism has not been determined as the cause.

“If this is considered to be a terrorist attack, this is a serious crime and there may be some accomplices to be interrogated,” he said.

He said the shooter used an automatic weapon to target the officers.

One officer has been killed, he said, and another was seriously wounded in the attack.

4. Dozens of police cars and helicopters descended on the popular tourist strip following the shooting, with police urging the public to avoid the area.

Thomas Samson / AFP / Getty Images

5. The US State Department also told people to avoid the area and monitor local news.

“Authorities are telling people to avoid the area after a shooting,” the department tweeted.

6. A motive for the attack had not immediately been announced, but authorities had started searching the suspect’s car.

Thomas Samson / AFP / Getty Images

7. Anti-terror prosecutors were also mobilized to investigate the incident, according to Agence France-Presse.

“Tribute to the slain police officer at the Champs-Elysées tonight,” French Prime Minister Bernard Cazeneuve wrote on Twitter. “Solidarity to [the officer’s] injured colleagues and their loved ones.”

While speaking at the White House alongside the Italian prime minister, President Donald Trump offered condolences to the people of France.

“It looks like another terrorist attack,” Trump said. “What can you say? It just never ends. We have to be strong and we have to be vigilant.”

French voters are set to go to the polls on Sunday in the first round of the country’s presidential election.

This is a developing news story. Check back for updates or follow BuzzFeed News on Twitter.

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