French President Francois Hollande addressed tonight's truck terror attack in Nice, saying the "scourge of terrorism" must be fought against.

"Once again we have seen extreme violence and it is obvious we must do everything to fight against this terrorism," Hollande said at a news conference after hundreds of people gathered to watch a Bastille Day fireworks display were mowed down by a terrorist in a large truck, leaving at least 80 of them dead.

“France as a whole is under the threat of Islamic terrorism,” he said. “We have to demonstrate absolute vigilance and show determination that is unfailing.”

Hollande added that several children were among the dead. He said 20 of the injured are still in critical condition.

He also announced that he would extend France's state of emergency by another three months, until Oct. 26. France has been on its highest state of alert since ISIS terrorists killed 130 people in Paris this past Nov. 13.

Watch the statement above.