One person was seriously wounded and six others were taken as hostage in incident at kosher supermarket in Paris, according to local police.

They were taken hostage at a kosher supermarket in eastern Paris on Friday after a shootout involving a man armed with two guns, a police source said.

There were unconfirmed local media reports that the man was the same as the one suspected of killing a policewoman in a southern suburb of Paris on Thursday.

A police source had told Reuters earlier he was a member of the same jihadist group as the two suspects in Wednesday's attack at weekly newspaper Charlie Hebdo.

The exact number of hostages was unclear. Local media spoke of at least five. The police source said the man was equipped with automatic weapons.

Police immediately cordoned off the area and a helicopter was flying overhead. Local media said Interior Minister Bernard Cazeneuve was rushing to the scene.