Japan’s NHK says a fire that broke out at the number four reactor of the Fukushima Number One nuclear power plant on Wednesday is no longer burning.

NHK quoted an emergency countermeasures team as saying that the fire broke out at 5:45 a.m. near the northwestern outer wall on the reactor's fourth floor.

The report said a technician confirmed from a distance that the fire went out on its own after 30 minutes.

Earlier in the day, the Tokyo Electric Power Company held an emergency news conference to announce that a technician saw smoke while moving batteries at the main container in the number four reactor of the plant. The company immediately informed the local government and related government agencies.

A fire broke out at the same reactor due to a hydrogen explosion on its fourth floor at around 9:30 p.m. on Tuesday.