A knife-wielding man attacked a sales assistant and a client in a mobile phone store in the French town of Claye-Souilly near Paris, killing one and severely injuring another, media said.
The Seine-et-Marne prefecture tweeted a warning, saying a "public security incident" had taken place at a shopping mall. Interior Minister Gerald Darmanin said two officers detained an attacker at a phone store.
The 62-year-old suspect is a Senegalese national with a record of drug-related offenses, according to the BFMTV news channel. He reportedly had a dispute with the salesperson before stabbing them with a knife. A client interfered and was likewise attacked. The deceased person is said to be 18.
Earlier this week, one person died as a result of a gunshot wound, and another three were stabbed near a kindergarten in Marseille, France.