At a train station in Paris, France, an assailant stabbed at least six people, injuring at least one of them.
According to AFP, the incident occurred on Wednesday at Paris's bustling Gare du Nord station.
Authorities claimed that the suspect was later apprehended by police after being shot.
The Gare du Nord is a busy hub for commuters and trains that depart for London, northern Europe, and northern France.
A person with knowledge of the case said that police were treating the stabbings as an attempt at murder rather than a terrorist attack.
The attacker's motivation was unclear at first.
At 6:42 a.m. (05:42 GMT), the attack left one of the six people seriously injured, while the other five suffered minor injuries, according to prosecutors.
At the scene, Interior Minister Gerald Darmanin told reporters that the entire incident was over in two minutes.
The attacker's weapon of choice was not immediately apparent.
At first, the police said it was a knife. Later, Darmanin stated that it was a "threatening weapon" rather than a knife.
It was described as "a kind of awl" by the newspaper Le Parisien as having a pointed, sharp edge.
After the police fired three rounds, the attacker was hit in the chest. Darmanin stated that he was transported to a hospital, where he was battling for his life.
He stated that the off-duty officers in plain clothes who intervened used their service weapons to halt the attack.
Darmanin stated that the police officers "were armed" and "were returning from duty at police headquarters to take their train and go home."
He stated that even though they were not on duty, they were authorized to use their weapons.
A minor injury occurred to one of the station-based border police.
Darmanin had earlier tweeted, "An individual injured several people this morning at the Gare du Nord."
He was eliminated quickly. We are grateful to the police for their courageous and effective response.
As police cordoned off the station and erected large white curtains around the attack scene, the incident delayed trains at the station during the rush hour.
However, according to a spokesman for the rail operator SNCF, no services were canceled.
With 700,000 passengers per day, the Gare du Nord is one of the busiest train stations in the world.
It serves as the starting point for Eurostar and Thalys services to Germany, the United Kingdom, Belgium, and the Netherlands.
Following a string of deadly attacks since 2015, including those by Islamist radicals and others, France remains on heightened security alert.