A series of murders in a Paris suburb aroused fear for a serial killer, who "may be on the loose," the Associated Press said.
Four murders were committed using the same semiautomatic gun since November, prosecutor Marie-Suzanne Le Queau told the Associated Press during a news conference Friday. The latest murder was on Thursday, Le Queau said.
Interior Minister Claude Gueant was serious about chasing down the murderer, according to BBC News. Gueant "vowed all would be done to solve the case."
The motive for the latest shootings was still yet to be determined, according to BBC News. The gunman killed between 4:00 p.m. and 6:00 p.m., and fled the scene on a motorbike each time, Le Queau told BBC News.
Police were still investigating any connections between the victims, whom were all shot in the head, according to BBC News. Police were also investigating whether there were more than one murderer, the Associated Press said.