However, the suspect was unknown to the French intelligence services, the prosecutor said. Investigation is still ascertaining whether Bouhlel was working alone or in a group.
"It is unknown whether he had any links to terrorists," Molins said at a press conference.
He said that the investigation will focus on finding such possible links.
"The investigation will focus on finding Mohamed Lahouaiej Bouhlel's [the truck driver] possible links to criminal terrorist Islamist organizations. Because, I remind, even though no group has claimed responsibility for yesterday's terror attack, such actions are in line with permanent calls of terrorist organizations for killings that they post in texts and videos being disseminated," Molins said.
On March 24, Bouhlel was sentenced by Nice Criminal Court to six month in prison for the "armed assault" comitted in January.
According to the preliminary data, the drive was alone in the cabin of the truck. The identity of the Nice attacker confirmed as Mohamed Lahouaiej Bouhlel.
The 31-year-old Bouhlel was born of Tunisia and lived in Nice, divorced with children. His ex-wife was taken into custody, the prosecutor added.
The prosecutor also said that nobody has claimed the responsibility for the attack yet, but the Nice attack is typical of terrorist organizations.
"[The investigation] will try to determine whether he had accomplices [and] it will also try to find out whether Mohamed Laouaiej Bouhlel had ties to Islamist terrorist organisations," Francois Molins told at the press conference. "Although yesterday's attack has not been claimed, this sort of thing fits in perfectly with calls for murder from such terrorist organisations."
Meanwhile, at least ten children and teenagers among those killed in deadly terror attack in Nice, Paris prosecutor Francois Molins said.
"Eighty four people have died, including ten children and teenagers," Molins said at the press conference.
The prosecutor added that 52 injured people remain in a critical condition.
"A total of 200 people were injured, 52 of them are in a critical condition including 25 in intensive care," he said.
He added that police found a real pistol, a fake pistol, two fake assault rifles and a used grenade in the truck.
Earlier in the day, police raided the house of the driver. The potential radicalization of the man had gone unnoticed by police.
The white truck that was used to carry out the deadly Nice attack was rented a few days before the Thursday night attack, according to earlier reports.
The Paris prosecutor's office officially opened a terrorism investigation into the Bastille Day attack in Nice.