(Bloomberg) – Power has been fully restored to slightly more than half a million homes across Tokyo that briefly suffered outages after a fire broke out at a Tokyo Electric Power Co. Holdings Inc. facility in the neighboring prefecture of Saitama.

The disruption affected government offices and brought some trains in the capital to a temporary halt. As many as 580,000 homes were affected, a Ministry of Economy, Trade and Industry spokeswoman said. Power was fully returned to those affected by 4:25 p.m. Tokyo time, the utility said.

Fire caused shutdown

Television footage showed plumes of dense black smoke billowing from a facility in the city of Niiza in Saitama prefecture. The fire caused the shutdown of two Tokyo Electric substations in Tokyo, Tokyo Electric spokeswoman Chisato Aoki said by phone.

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