It is believed Mohamed Lahouaiej-Bouhlel may have had help planning the deadly truck attack.
Police say that the 31-year-old Nice terrorist, Mohamed Lahouaiej-Bouhlel, may not have worked alone as previously thought.
Read: Berkeley Student Who Went Missing in Nice Attack Is Confirmed Dead
He sent two text messages just before the Bastille Day attack, with one saying: "Bring more weapons, bring five of them to C." It is currently unclear what “C” meant in the message.
The other read: "It's good, I have the equipment.”
Bouhlel reportedly asked for "the heaviest truck" when he rented the 19-ton refrigerated vehicle and practiced for two days, driving up and down the Promenade des Anglais trying to figure out how to cause the most damage.
According to video surveillance footage, Lahouaiej-Bouhlel was seen studying the area prior to Bastille Day.
Over the weekend, police arrested a man and woman believed to have been linked to the terrorist driver.
More information about the divorced father of three has come also to surface. He was a gym fanatic who drank alcohol and used drugs. He had numerous photos of both male and female sexual partners saved on his phone.
Read: 21-Year-Old Student and Mom of 7 Among the Dead in Nice Truck Attack
On Saturday, ISIS claimed responsibility for the attack that left 84 dead and more than 200 injured. The terrorist organization called Lahouaiej-Bouhlel, who was killed after the massacre, a "soldier."
Watch: What Do We Know About the Nice Killer? 31-Year-Old Divorced Delivery Man Was Known to Police