The Japan Meteorological Agency (JMA) reported that the eruption occurred at around 4:37 pm local time, sending a plume of ash over 500 metres above the crater.
The smoke drifted eastward toward Miyazaki prefecture, and no falling volcanic rocks have been confirmed so far, the national broadcaster NHK reported.
Volcanic alert level two, which restricts entry near the crater, remains in effect for the region.
Authorities urge caution within a 2-km radius of the crater due to the risk of large volcanic rocks and pyroclastic flows within approximately one kilometre.
Residents are advised to stay alert, especially on the downwind side, where ash and small rocks may be carried over long distances. -
Bernama, Xinhua
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