4 other folks had been harm, two of them critically, in a knife assault in Paris close to the previous workplaces of the satirical mag Charlie Hebdo, officers say.
A suspect has been detained within the close by Bastille space after police mentioned a minimum of one individual had fled the world via metro.
A safety cordon has been arrange across the workplaces within the 11th arrondissement.
The general public have been informed to keep away from the world.
A number of colleges within the space have additionally been locked down, native media say.
A blade – described as a machete or a meat cleaver – was once recovered on the scene of the assault.
The arrested suspect was once detained with blood on his clothes, French media studies say.
The assault comes as a high-profile trial is underneath manner in Paris of 14 other folks accused of serving to two jihadists perform the 2015 assault on Charlie Hebdo, by which 12 other folks have been killed.