Firework mortars were fired towards the Compiègne (Oise) police station overnight from Sunday to Monday.
Three people were arrested, said the public prosecutor Marie-Céline Lawrysz.
The shots caused no injuries.
According to the prosecutor, a police patrol was first victim of projectiles, "mainly cobblestones", on Sunday around 11 p.m. in the sensitive Clos des Roses district, known for its drug trafficking, in particular crack and of heroin.
Police station targeted
The police then "dismount" to try to arrest the perpetrators, a dozen people, who flee.
When the patrol returned to the police station, an hour later, fireworks were fired at the building.
Police come out to chase a vehicle "with people on board who could be the perpetrators of these shots".
When they reached the Clos des Roses district, they were again "victims of mortar and projectile fire".
After the use of "intermediate weapons" by the police, three people were arrested.
The mayor asks for the support of "national police officers"
The LR mayor of Compiègne, Philippe Marini, called on Monday in a press release for “the support of additional national police officers”.
“These intimidations will not stop our resolve to fight all trafficking,” he wrote.
According to his figures, 36 kg of drugs were seized in 2021 in his city and "already more than 22 kg since the beginning of 2022".
A 12-year-old child checked with 4.5 grams of crack in Compiègne
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