FUKUSHIMA, Japan - The operator of the Fukushima Daini nuclear power plant being decommissioned said Sunday it halted cooling of a spent fuel pool after receiving an alert about a pump malfunction.

According to Tokyo Electric Power Company Holdings Inc., the alarm for the spent fuel pool of the No. 1 reactor was triggered at around 2:45 p.m. Sunday. Workers shut down the pump after smoke was confirmed at the site, suspending the pool's cooling.

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