France was bracing for further unrest on Wednesday evening following the death of a 17-year-old boy who was allegedly shot by police during a traffic stop, writes CNN.

The incident triggered violent protests in several suburbs of Paris overnight on Tuesday, during which 24 police officers were injured and 40 cars were set alight, French authorities say. An extra 2,000 police officers were mobilized Wednesday afternoon in anticipation of the violence stretching into a second evening.

The officer who allegedly shot the teenager was put in custody on Tuesday after the boy, identified as Naël, died after being pulled over at a traffic stop in the Parisian suburb town of Nanterre. The officer will remain in custody for another 24 hours to undergo questioning by prosecutors, Nanterre prosecutor’s office told CNN.

French President Emmanuel Macron described as “unjustifiable” the fatal shooting of the youth, who was in the car, a Mercedes AMG, with two others at the time of the incident, prosecutors said.

Speaking to journalists in Marseille, Macron said: “Nothing, nothing justifies the death of a young man. I would like to express the emotion of the entire nation at the death of young Naël, and give his family of our solidarity and the affection of the nation. We need calm for justice to carry out its work. And we need calm everywhere because the situation we can’t allow the situation to worsen”.

The death of the 17-year-old was pronounced at 9:15 a.m. local time “following at least one gunshot wound” and despite the intervention of emergency medics, the Nanterre prosecutor’s office said. A passenger in the vehicle was taken into custody and later released, while another passenger, who is believed to have fled the scene, is missing, the statement said. An autopsy and additional examinations, including a toxicology report, have been ordered by the prosecutor’s office.