French police has warned that up to six terror cell members may still be at large after the terror attacks in which 17 people were killed.
According to the authorities, one of them was spotted driving a car registered to the partner of one of the dead attackers, reported Sky News.
Police said that a search operation is being carried out to find the Mini Cooper car registered to Hayat Boumeddiene, the girlfriend of Amedy Coulibaly, who murdered a police officer before killing four people in a Jewish supermarket last Friday.
The incident took place after co-conspirators Said and Cherif Kouachi shot 12 people in the Paris office of French satirical magazine Charlie Hendo on Wednesday.
All the three killers were cornered and killed in police assaults on Friday.
France's Prime Minister, Manuel Valls, said Coulibaly "undoubtedly" had an accomplice and that the "hunt will go on" for anyone who helped him.
Meanwhile, reports suggested that Boumeddiene, who is still absconding, has fled to Syria.