Police have detained multiple people in connection with a parked car found near Paris' Notre Dame cathedral that contained gas cylinders, officials said Wednesday.
Interior Minister Bernard Cazeneuve said the car and its contents were spotted over the weekend but did not elaborate on the nature of the cylinders or how many people have been taken into questioning.
The vehicle was without a license plate and had been parked in a no-parking zone for two hours, Florence Berthout, mayor of Paris' Fifth Arrondissement, told BFMTV.
The newspaper Le Figaro, citing sources close to the investigation, reported that the cylinders were not attached to any detonators.
The French news agency AFP reported that a preliminary terrorism investigation had been opened and that two people were in custody.
France is under a state of emergency that was first put in place in response to terrorist attacks in November 2015 that left 130 people dead in Paris. A six-month extension was approved in July in response to an attack in the southern city of Nice that left 86 people dead.