Nice, France At least 73 people were killed Thursday night when a large truck plowed through a crowd celebrating Bastille Day in Nice, France, the Nice prosecutor's office said, according to French media. The driver pointed his tractor-trailer into the crowd and accelerated, mowing bodies over. The driver was shot to death, authorities said. At least 100 people were injured, authorities said. Here are the latest developments in the tragedy: • The attack in Nice, France, began when an occupant of the truck shot into the crowd and then drove for 2 kilometers along the pavement of the Boulevard des Anglais, the main street in Nice, regional President Christian Estrosi told CNN affiliate BFM-TV. He said police later found firearms, explosives and grenades in the truck. • Anti-terror prosecutors have taken over the investigation, according to BFMTV, citing the prosecutor's office.