50 in Nice near life and death, Hollande

French President Francois Hollande says about 50 people are still fighting for their lives following the attack that killed at least 84 people in Nice on Thursday.

"About 50 people are in an absolute urgency between life and death," Hollande said after visiting victims at a hospital in the French Riviera city.

He added that there were a lot of foreigners and children among the dead and warned that the fight against extremist groups would be long because they would continue to try to strike at Western values.