After that attack and others in the last two years - many perpetrated by Islamic State militants or those claiming to be inspired by the extremist group - terrorism and national security remain crucial issues in the most contentious election France has seen in decades.
So-called Islamic State (IS) said that one of its "fighters" had carried out the attack.
The gunman attacked as the officers were guarding an area near the Franklin Roosevelt metro station, not far from the Arc de Triomphe on Thursday night. Exactly what you said - a auto pulled up on the Champs-Elysees.
Police and soldiers sealed off the area, ordering tourists back into hotels and blocking people from approaching the scene.
"The investigation has been entrusted to the Anti-Terrorist Section (SAT) of the Criminal Brigade and the Directorate General of Internal Security (DGSI)", Paris chief prosecutor's office said in a statement.
French police are said to have launched a raid on the home of the attacker who it is said had links to "extremism". Two police officers told AP the attacker had been flagged as an extremist, but they offered no further details.
The shooting comes just two days after police arrested two men in southern Marseille with weapons and explosives who were suspected of preparing an attack to disrupt the first-round of the presidential election on Sunday.
"It's too early to say how or whether he was connected to what happened on the Champs Elysees", ministry spokesman Pierre-Henry Brandet said.
French police warned the public to stay away from the area and armed officers are at the scene. Who knows? Maybe they're trying - there's been a lot of analysis.
Fillon is calling for the election campaign to be suspended altogether. REUTERS/Reuters Tv Masked police stand on top of their vehicle on the Champs Elysees Avenue after a policeman was killed and two others were wounded in a shooting incident in Paris, France, April 20, 2017. "We have to be strong and we have to be vigilant, and I've been saying it for a long time". A foreign tourist was also slightly injured.
France has been under a state of emergency since 2015, because of a series of deadly terrorist attacks over the past several years.
Meanwhile, French Prime Minister Bernard Cazeneuve has shown solidarity with the policeman, who was killed in the shooting. Parliament voted in December to extend the extraordinary provisions to ensure the protection of upcoming presidential and general elections.
In July, an attacker in Nice drove a truck into a crowd celebrating Bastille Day, killing more than 80 people and injuring hundreds before he was fatally shot by police.
A White House source said they could potentially have a vote by the end of next week, though they put the chances at 50-50. House Republicans have sued to eliminate the program, which will bring the insurance industry about $7 billion this year.
According to GM, other assets like vehicles were also taken away from the facility, resulting in irreversible damage to the firm. Protesters accuse Maduro of eroding democracy and mismanaging the country's increasingly cash-strapped economy.
He added a Miami flavor with attacks on Trump for his anti-immigrant rhetoric and told the crowd about his visit to Little Haiti. Sanders won Maine's presidential caucuses by almost two-thirds when he ran in the 2016 primaries against Hillary Clinton.
The French media seized on the comments with newspaper Le Parisien calling the different views of the politicians a " cold war ". Le Pen has pushed to normalize the ultra-conservative National Front and scour racism and anti-Semitism from its ranks.
Earlier, a 26-year-old Iraqi national, identified as Abdul Beset A., was detained in alleged connection with the Dortmund attack. The accused man was staying in the same hotel as the Borussia Dortmund team, the German federal prosecutor's office said.
I think in the northern parts of the US , hockey is popular enough but it's certainly not popular anywhere with an arid climate. Carlyle wasn't ready to declare their five-on-five play the key to their success . "I don't know if we were that great".
China may be getting fed up with continued nuclear bluster from long-time ally North Korea and tilting toward the United States. Several senior administration officials told CNN that China was now the focus of President Donald Trump's North Korea strategy.
Paynor also said. "Instead of helping us, the first to criticise is this State Department, so you can go to hell, Mr. President Duterte will be busy next week since he will be hosting for the first time an global engagement.
They took it to the reeling Jackets (losers of six straight coming in), holding them without a shot for the first 10-plus minutes. The Maple Leafs with a lineup filled with talented rookies, are ahead of schedule by making the playoffs this season.
Selfless as he is, he also knows what he means to this team and why it's going to be important for him to be the "next man up". The Thunder have shown bounce-back ability all season, going 13-8 in games immediately following a double-digit loss.
Gunman in Fresno took pride in killing of 3 men, police say
She said the Catholic Charities team had come together for prayers for the victims and their families, for clients and each other. Muhammad told detectives that he is Muslim but hadn't been to mosque in 20 years and prays to numerous gods, Dyer said.
Barca can turn Euro pain to Clasico gain
Juventus also had the first big chance of the second half as Cuadrado fired across Ter Stegen but wide of the far post. We tried everything until the end and kept fighting to create chances but none of them went in.
Florida senator who used racial slur resigns
The investigation into Artiles has been dropped by request of Thurston who says he's also satisfied with the outcome. Artiles used obscenities with Sen. "No further action by the Senate will be taken in regard to this matter".
Paris attack 'will have a big effect on presidential election'
He was taken into custody but while being questioned grabbed another officer's gun and shot him three times, the source added. ET) when a vehicle stopped in front of a police van, according to French Interior Ministry spokesman Pierre Henry Brandet.
ISIS Hits Muslims in Mosul with Chemical Attack
But their progress has been slowed by improvised explosive devices and snipers as the troops engage in house-to-house fighting. He went on to identify one of the two slain terrorists as Abdul Qadir Mahmoud al-Hamdouni, otherwise known as Abu Sajee.
Obama to hold first public event of his post-presidency
It will mark the first in a series of public events for Obama, including stops next month in Boston to receive the John F. Former President Barack Obama and his wife Michelle deliver a farewell address in Chicago, Illinois, Jan. 10, 2017.
Former tight end kills himself in prison
Michael Baden, a former chief medical examiner for New York City, to perform an independent autopsy. Those who knew Hernandez said Wednesday they doubted he would commit suicide.
Red Sox beat Blue Jays on Betts' RBIs in 10th
Bautista is now on an 0-for-16 streak at the plate, is batting.109 overall and has no home runs in 55 at-bats this season. Blue Jays manager John Gibbons couldn't get on the team's charter to California fast enough on Thursday night.