Belgian prosecutors said on Sunday that two attackers who died in the Paris attacks were French citizens and they were living in Brussels.
They added, the Belgium officers are keeping seven people under surveillance for probable connection with the attacks, and investigators have found two cars used in the attacks were rented in Belgium.
"It appears that two French nationals, who lived in Brussels ..., were identified as among the attackers who died on the spot," the federal prosecutor's office said in a statement.
The statement said, "In addition, two cars registered in Belgium were found in Paris, one near the Bataclan and the other near Pere Lachaise."
It added, "The investigation shows that the two vehicles were rented at the beginning of the week in the Brussels area."
It was previously announced that many people had been arrested when police made raids on Saturday in the Molenbeek discrict of Brussels which holds many refugees.
Prosecutors said they were investigating a probable connection with a car rented in Belgium, found in the Bataclan.
Also on Saturday Belgian Justice Minister Koen Geens said that the arrests in Molenbeek "can be seen in connection with a grey Polo car rented in Belgium."
Earlier, Paris Chief Prosecutor Francois Molins announced that a Volkswagen Polo rented by a French national living in Belgium was found near the Bataclan concert venue, where nearly 90 people were killed.
Approximately 129 people had been killed and more than 350 injured in coordinated attacks in the Bataclan concert hall, restaurants and the Stade de France stadium.