According to reports from France, a truck has crashed into a crowd gathered for the country's Bastille Day fireworks on the seafront of Nice.
According to France Info Radio, local police warned of an attack and asked Nice residents to stay indoors. There are reported to have been at least several deaths. Security forces and ambulances raced to the scene, and authorities from the local Alpes-Maritimes prefecture urged residents to stay indoors.
Terrified pedestrians screamed as they fled the area. A huge security cordon was established closing off the central Place Massena by 9:30pm GMT.