French Prime Minister Jean Castex said on Friday that four people were injured, including two seriously, in a knife attack that took place near the former office of satirical magazine Charlie Hebdo.
A security cordon was set up around the office, a police source also said.
French media BFM TV and Le Figaro said a suspect has been arrested on the steps of the Paris Bastille opera house.

24 dead after bus falls into river while boarding ferry in Bangladesh
Iran says it is reviewing US proposal to end war
UN Human Rights Council adopts resolution condemning Iranian attacks
273 million children out of school in 2026 UNESCO report
Russian attacks kill two in Ukraine's Kharkiv