Paris: French police arrested a man and a woman with ties to the man behind a truck ramming attack claimed by the ISIS, a judicial source said.
Five other people are already in custody, including the estranged wife of Mohamed Lahouaiej-Bouhlel, a Tunisian with no apparent links to extremism who is said to have been radicalized very quickly.
Meanwhile, a source close to the investigation said that the Tunisian attacker visited the Nice promenade with his rented truck on two days before he rammed the vehicle into a crowd
The source said police had questioned hundreds of people since Thursday night's attack, several of whom said Lahouaiej-Bouhlel did show signs of being religious.
French authorities have said the attacker became radicalised "very quickly", and some of his family and friends had previously said he smoked, drank and never went to the mosque.
Lahouaiej-Bouhlel was shot dead by police after he rammed a truck through a crowd celebrating France's Bastille Day in the resort city of Nice, leaving 84 dead and about 300 more injured.
(With agency inputs)