France has been on maximum security alert for most of the past 19 months, hit by multiple terrorist attacks that have left nearly 230 people dead and hundreds injured.
President Francois Hollande declared a state of emergency after the assault on Paris last November, the deadliest in France’s modern history.
That gives security and legal forces extra rights to conduct investigations and arrest suspects.
The order was due to end on July 26, after the Tour de France cycling race finishes.
Following the Nice attack, Hollande said he would be extending the state of emergency for a further three months.
Prime Minister Manuel Valls has said in parliament that security services have foiled several attacks since January 2015, when two brothers killed 11 journalists in the newsroom of Charlie Hebdo, a satirical newspaper based in Paris.
Here is a brief timeline of the recent attacks on France:
- December 22, 2014: A man reportedly yelling “Allahu Akbar” ran over 10 pedestrians at a Christmas market in Nantes, killing one, then attempted suicide.
- 7-9 January 2015: Multiple attacks in Paris leave 17 dead, including at the Charlie Hebdo satirical newspaper and at a kosher store near Paris.
- 3 February 2015: A man attacks soldiers protecting a Jewish community centre in Nice. Several soldiers were stabbed but no one was killed.
- 26 June 2015: A man is beheaded at an industrial plant near Lyon, with two others injured. Arabic inscriptions were found at the scene.
- 21 August 2015: A man carrying a rifle attacks passengers on the Thalys high-speed train between Amsterdam and Paris, injuring three. He is overpowered by passengers.
- 13 November 2015: Multiple attacks in and near Paris leave 130 dead, including at the Bataclan concert hall.
- 13 June 2016: A knife-wielding man kills two police officers in Yvelines, west of Paris. The man is shot dead by police.
- 14 July 2016: A man drives a truck into a crowd watching Bastille Day fireworks in Nice, killing at least 77 people and injuring hundreds. He is shot and killed by police.