A court has issued an unprecedented order for a nuclear reactor in western Japan to stop operating and ordered a second one to stay offline.

The Otsu District Court that issued the injunction said the emergency response plans and equipment designs at the two reactors have not been sufficiently upgraded despite the 2011 Fukushima crisis.

Wednesday's order requires Kansai Electric Power Co. to shut down the No. 3 reactor immediately and keep the No. 4 offline at the Takahama plant in Fukui prefecture, home to about a dozen reactors.

The two reactors restarted this year after a high court in December reversed an earlier injunction by another court.

The decision reflects Japan's divisive views on nuclear safety and leaves only two of the country's 43 reactors in operation.