Islamic extremists attacked the offices in the French capital in 2015, killing 12 people.
Four people have been wounded in a knife attack near the former offices of satirical magazine Charlie Hebdo in Paris, police have said.
Associated Press reporters at the scene saw police flooding into the neighbourhood in eastern Paris, near the Richard Lenoir Metro station.
Officers cordoned off the area, including the offices, after a suspect package was noticed nearby.
A blade was found at the scene, two police sources said. One described it as a machete, the other called it a meat cleaver.
A City Hall official said schoolchildren in the area were being kept inside.
Police have arrested a suspect and no one else is being sought.
A police source told Reuters that two of the victims have “life threatening injuries”.
Prime Minister Jean Castex cut short a visit to a suburb north of Paris to head to the Interior Ministry to follow developments.
Islamic extremists attacked the Charlie Hebdo offices in 2015, killing 12 people.
The motive for this attack is unclear, and it is not clear whether it is linked to Charlie Hebdo, which has moved its activities out of the area.
The attack comes three weeks after 14 people with suspected links to homegrown Islamist militants who attacked the Charlie Hebdo offices went on trial in Paris.
The attackers’ widows are scheduled to testify this afternoon.
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