French police investigate the scene where a man attacked and injured people with a knife in the streets of Paris on September 9, 2018.
An eyewitness described the situation that he saw a man holding a knife was being chased by a group of people who were throwing Petanque balls at him.
The stabbing spree finally came to an end when a plain-clothes police officer and a night patrolmen subdued the attacker.
Police said that the attack was not being treated as an act of terrorism.
Four of the victims are said to be in critical condition.
Witnesses told Agence France Presse the man was also carrying an iron bar. The attacker, suspected to be an Afghan, has been arrested.
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French police are not characterizing a knife rampage in a popular Paris tourist spot as a terror attack, a French Interior Ministry spokesman told CNN.
"There were around 20 people chasing him", said Youssef Najah, who was walking nearby.
The pair, said by police to be in their fifties, were then attacked, he said. We said to them: "'Watch out, he has a knife". He said terrorist motives were not suspected at this stage.
According to initial reports, at least seven people have been injured, including five people who suffered serious injuries. The attacker first stabbed two men and a woman near the MK2 cinema on the Quai de Loire.
France has seen smaller lone-wolf attacks in recent months.
More than 240 people have been killed by extremists since the massacre at the Charlie Hebdo satirical magazine in Paris in January 2015.