Four people including a policewoman are in custody over links to the attacks that terrorised Paris earlier this year, F rench police and security officials said.
The two officials said one man who was detained had ties to Amedy Coulibaly, the gunman who killed a policewoman on January 8 and then four more people at a kosher supermarket on January 9 before being killed by security forces. They said the man's girlfriend, a policewoman, is also in custody.
The officials had no details about the two others in custody.
No-one besides three dead gunmen have been linked directly to the January 7-9 attacks at the satirical newspaper Charlie Hebdo and the market, which left 20 people dead, including the gunmen.
Coulibaly's widow left for Syria days before the attacks.
No-one with ties to Said or Cherif Kouachi, the brothers who killed 12 people at Charlie Hebdo, is in custody or has been formally sought since the attacks.