0400: President Hollande refers in a televised address to the "terrorist nature of this attack" which involved "the most extreme form of violence" and says the death toll at this stage is at least 77.
Those attacks, and one in Brussels four months ago, have shocked Western Europe, already anxious over security challenges from mass immigration, open borders and pockets of Islamist radicalism.
At least 84 people were killed by the driver who drove into crowds during Bastille Day celebrations. Ciotti said identification papers were found in the truck and that investigators were trying to determine whether they were legitimate. "France is determined to remain united in our values and not relinquish anything to terrorism", Garachon said, describing Bastille Day as "a symbol of freedom".
King Felipe VI and Queen Letizia of Spain paid their respects to the victims of the Nice attack by visiting the residence of Yves Saint-Geour, the French ambassador to Spain on Friday 15 July.
Jihadists supporting the Islamic State allied Boko Haram group were to use automatic weapons and bombs buried near sunbeds.
"Just as terror alerts advising the public to be on the lookout for "something" are ineffective and possibly counterproductive, efforts to harden cities against these attacks and assaults are problematic because the venue and method of attacks are limitless". The driver was a Nice resident, according to the Nice Matin newspaper.
Police deputy spokesman Maj-General Songpol Wattanachai said, "The Immigration Police Bureau has also been instructed to get stricter with screening foreigners coming in and out [of the country]", he said.
A parliamentary inquiry into last November's attacks called for a major overhaul of the country's security apparatus this month with a national counterterrorism agency to oversee the fight against militants. "A new era because we are facing people who are kamikazes...."
Interior Minister Bernard Cazeneuve said he was deploying 70 police, medical and technical specialists in order to make sure that the remains of those killed were quickly returned to the families. "It was surreal. People screaming, children crying, young children running around the place alone, a woman on rollerblades screaming for her child".
"A fraction of a second later, an enormous white truck came along at a insane speed, turning the wheel to mow down the maximum number of people", he wrote. He visited wounded people in two hospitals, including one where officials had treated about 50 children and teenagers for a wide range of injuries. News reports, however, indicate that the truck in Nice was also loaded with small arms and explosives.
Although the road was cordoned off, the driver managed to cover more than a mile along the packed waterfront strip before being shot by police. "Attacks are prepared with accomplices", Estrosi said.
"Going grey, in his thirties, around 35-years-old".
"It's terrorism by proximity", said Nathalie Goulet, a French senator who led an inquiry into jihadi recruitment networks.
"This was an individual who apparently was not known as radicalized", he said.