Videos and images from the scene posted on social media show police officers outside a building in central Paris's Petites Ecuries street, near the rail hub Gare du Nord.
Police say a man is holding two people hostage in an office in central Paris.
He said to be armed with a bomb and a fake handgun and had originally taken three people hostage but one managed to escape. The French Special Forces have been photographed arriving at the scene.
However, police have said there was no indication that the incident was terrorism-related, according to CNN. They declined to provide more details. Law enforcement officials cordoned off the area.
The man reportedly asked for the Iranian embassy to be contacted but the police did not confirm the report. An Interior Ministry official said negotiations with the suspect were taking place.
The freed hostage was reportedly doused with gasoline and hit in the face as he was freed, according to Lefebvre, head of the FO police union.
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