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Mount Ibu on Halmahera Island in Indonesia's North Maluku province erupted, throwing thick black volcanic ash over its peak as high as 7,000 metres, according to the Center for Volcanology and Geological Hazard Mitigation.

Ibu volcano in Indonesia's Halmahera Island erupted again, sending volcanic ash as high as 5,000 metre to its peak, the Center for Volcanology and Geological Hazard Mitigation said.

There were no immediate reports of damage or casualties after the eruption at 2:54 pm local time (0754 GMT).

Mount Aso, a volcano in the tourist destination on the main southern island of Kyushu in Japan, sent plumes of ash 3.5 km high when it erupted on Wednesday, prompting warnings of lava flows and falling rocks.