A police officer has been killed and two others injured in a suspected terrorist shooting in the centre of Paris. (AP Photo/Thibault Camus) Forensic experts collect evidences from the auto belonging to an attacker who killed a police officer on the Champs Elysees avenue in Paris, France, Friday, April 21, 2017.
The Paris prosecutor's office said it had identified the attacker and was looking into whether he acted alone.
"Last night's attack on Paris could have a massive influence on the political front, not only in France but also in the United Kingdom which is also preparing to head to the polls", said Naeem Aslam, Chief Market Analyst at Think Markets.
Prime Minister Justin Trudeau posted a message on Twitter late Thursday saying "Canada stands with France, as we always will, against terror". Security has already has been a dominant theme in the campaign and the violence on the city's iconic avenue threatened to have a bearing on voters' decisions.
Police tape surrounded the quiet, middle-class neighborhood in Chelles early Friday, and anxious neighbors expressed surprise at the searches.
Quoting President Donald Trump, Pence said "we have to be strong, and we have to be vigilant".
"He abandoned his auto and tried to flee, but was killed", French Interior Ministry spokesman Pierre-Henry Brandet said.
France has been living under the state of emergency regime since the November 13, 2015 terrorist attacks in Paris and its northern suburb Saint-Denis, when a total of 130 people were killed and 350 injured.
The bustling Champs Elysees lies in the heart of Paris and is lined with shops and restaurants.
The impact of Thursday's incident on the outcome of the French election is unclear, with the first round of the poll taking place on Sunday, but far-right leader Marine Le Pen, her centrist rival Emmanuel Macron, and scandal-hit conservative Francois Fillon cancelled campaign events planned for Friday. "This kind of terrorism is an attack on the entire civilized world, and we resolutely condemn it", Abe said in the message, released by the Foreign Ministry. Additional police and security forces were deployed during a special operation to detain the suspect's possible accomplices.
Anti-terror prosecutors have opened an investigation.
Evidence and witness statements indicate that the attack was carried out by one man, Brandet said.