It's not yet known whether the attack is terror-related.
"Based on testimony of eyewitnesses who said they heard the attacker saying [Allahu] Akbar and because of the method of the attack it's the anti-terror unit who is in charge of the investigation", he said.
At least one person has been killed after a knifeman went on a rampage in central Paris tonight.
Two of the wounded individuals are in critical condition, said police, who confirmed that they took down the suspect around 9 p.m.
Beyond the police cordon, however, crowds still filled nearby cafes and the city's night life resumed its normal pace soon after the suspect was reported as having been neutralised.
French Interior Minister Gerard Collomb wrote on Twitter, "I appreciate the prompt response and composure of the law enforcers who neutralized the assailant".
Details about the identity of the attacker was not disclosed.
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Paris Mayor Anne Hidalgo also offered her prayers and said she wanted the victims to know "all Parisians are by their side".
Paris was under higher stability in late decades after a string of mortal Islamic extremist attacks.
The attacker was shot dead by police.
Counterterrorism authorities are leading the investigation of the attack.
Firefighters'vehicles block Saint Augustin street after a knife attack in Paris on May 12, 2018.
"We were told to get into a bar quickly".
Video posted to social media showed police surrounding a man lying on the ground as bystanders in the area frantically fled the scene.
The bill enshrines emergency security rules into ordinary law that allow police will have more power to search, arrest without judge approval and restrict people movements and gathering.