At least six men believed to have been involved in the Paris terror attacks last week that saw the deaths of 17 people, remain at large, authorities said on Monday.

While not much is known about the terror group, police suspect the bloc boasts of eight to 10 members. An official revealed he believed that about five to six members "could still be at large."

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"The threat is still present," French Prime Minister Manuel Valls said, stressing the urgency of the manhunt.

French officials speaking under condition of anonymity disclosed to media that authorities are on the lookout for a Mini Cooper registered to terror suspect Amedy Coulibaly's wife, Hayat Boumeddiene.

Authorities believe a man seen driving Boumeddiene's car around Paris recently is part of the terror group responsible for last week's deadly attacks.

The attacks, which began Wednesday, were carried out by brothers Said and Cherif Kouachi. They targeted the satirical weekly Charlie Hebdo, killing 12 people in the process.

Local authorities assert the attack was instigated by three suspects, but only two - Said and Cherif Kouachi - have been identified.

Police say Coulibaly had slain a police officer on Thursday and four civilians on Friday after an attack at a kosher mart.

Additionally, Coulibaly had also been responsible for a bomb attack in the town of Villejuif on Thursday although no injuries or casualties were suffered, The Associated Press relayed.

The three attackers were killed on Friday after two separate clashes with local security forces.

In response to the terror threats, the government has deployed around 10,000 of its troops to safeguard sensitive sites, such as those in Jewish neighborhoods and schools.

Defense Minister Jean-Yves Le Drian promised that the nationwide troop deployment would be accomplished by Tuesday, while Interior Minister Bernard Cazeneuve said that about 4,700 security forces will be assigned to protect the country's 717 Jewish educational centers.

Valls said that the country will work under the premise that the attacks will persist, underscoring his belief that there are "probably some possible accomplices."

TagsParis terror attack, France terrorist cell, Amedy Coulibaly, Hayat Boumeddiene, Charlie Hebdo, Said Kouachi, Cherif Kouachi, war on terror