As many as six members of a terrorist cell involved in the Paris attacks may still be at large, including a man who was seen driving a car registered to the widow of one of the slain gunmen, police officials said on Monday, according to The Associated Press (AP).
Two French police officials said that authorities were searching the Paris area for the Mini Cooper registered to Hayat Boumeddiene, the widow of Amedy Coulibaly, who is now believed to be in Syria.
The French police officials spoke on condition of anonymity because they are not authorized to discuss details of the investigation with the media.
France deployed 10,000 troops to protect sensitive sites, including Jewish schools and neighborhoods, in the wake of the attacks that killed 17 people last week. Brothers Cherif and Said Kouachi, as well as Coulibaly, their friend who claimed ties to Islamic extremists in the Middle East, died Friday in clashes with police.
Prime Minister Manuel Valls said the manhunt is urgent because "the threat is still present" after the attacks that began Wednesday with 12 people killed at the satirical newspaper Charlie Hebdo.
A policewoman was killed on Thursday, and four people were slain at a kosher supermarket Friday before the gunmen were killed by police in two nearly simultaneous clashes with security forces around Paris.
Video emerged on Sunday of Coulibaly explaining how the attacks in Paris would unfold. French police want to find the person or persons who shot and posted the video, which was edited after Friday's attacks, according to AP.
Boumeddiene was seen traveling through Turkey with a male companion before reportedly arriving in Syria with him on January 8, the day after the Charlie Hebdo attack and the same day Coulibaly began his murderous spree by killing the policewoman.