Paris Prosecutor Francois Molins says Friday's attacks seemed to involve three teams of gunmen, several who wore suicide vests.
He said one group traveled in a car seen at several shooting sites.
Molins said Saturday that 129 people were killed in the wave of attacks and 352 were injured, including at least 99 people who are still in critical condition. Seven of the attackers died in suicide bombings.
Molins said two attackers' bodies were found at the Stade de France ((stadium)) with explosives belts with batteries. He said three attackers died - one shot by police and two when their suicide vests exploded - at the Bataclan concert hall, where 89 people were killed.
He said one of the cars was registered to a French citizen and was stopped at the Belgian border.