One person has died and at least four others have been injured in a drive-by shooting in the Yvelines district west of Paris, a police source said on Friday.
A suspect has been arrested near the town of Trappes, French broadcaster BFM reported.
Ali Rabeh, the mayor of the Yvelines town of Trappes, told BFMTV that a man had fired shots from his car and "appeared to be firing at random and seemed intent on carrying out a massacre".
He said one of those injured was a 12-year-old girl, adding that the shooter lived in a nearby town. There was no information so far about his motives, he said.
Lecornu wrote on X that security forces had been fully mobilised. "The national anti-terrorism prosecutor’s office has announced that it is monitoring the situation," he added.
Representatives for the prosecutor's office did not immediately respond to a request for comment, and the prefecture declined to comment. The anti-terrorism prosecutor's office confirmed it was monitoring the case.