Five men suspected to be linked to the Tunisian man, Mohamed Lahouaiej-Bouhlel, who killed 84 people when he drove a truck into a Bastille Day crowd in Nice were arrested on Saturday, a judicial source said.
French authorities meanwhile said five people believed to be linked to the truck driver were in police custody, including his estranged wife. Of the suspects, three were arrested on Saturday while two arrests were made on Friday.
French President Francois Hollande, who has called the attack “an undeniable terrorist nature”, has moved to extend a state of emergency by three months.
BBC reported that of the 84 dead, 10 were children. Another 202 people were injured, with 52 of them in critical condition. Twenty-five were said to be on life support.