Valls says.
He added that the authorities believed new terror attacks were being planned in France and other European countries.
Meanwhile two more attackers were named as well as five already identified. One is confirmed to have entered Greece among migrants earlier this year.
A total of 129 people died in the attacks on bars and restaurants, a concert hall and the Stade de France.
France is to hold a nationwide minute of silence at midday local time (11:00 GMT) for the victims.
A huge manhunt is under way for surviving members and accomplices of the Islamist group that carried out the attack.
He added that the authorities believed new terror attacks were being planned in France and other European countries.
Meanwhile two more attackers were named as well as five already identified. One is confirmed to have entered Greece among migrants earlier this year.
A total of 129 people died in the attacks on bars and restaurants, a concert hall and the Stade de France.
France is to hold a nationwide minute of silence at midday local time (11:00 GMT) for the victims.
A huge manhunt is under way for surviving members and accomplices of the Islamist group that carried out the attack.
