Mount Sinabung volcano in North Sumatra of Indonesia erupted on Sunday, sending columns of ash up to 3,000 meters to the sky, an official said.
But the eruption did not trigger evacuation.
The volcano had erupted for four times since earlier Sunday, Sutopo Purno Nugroho, spokesman of the national disaster management agency, told Xinhua via phone.
Hot ash and gravel were spewed to the sky, all sliding to the south, said Sutopo.
Mount Sinabung last erupted in June and September 2014 after erupting on and off from September 2013 to February 2014, which left 15 people dead and more than 30,000 other internally displaced.
Mount Sinabung is among more than 120 active volcanoes in Indonesia, which is prone to seismic upheaval due to its location on the "Pacific Ring of Fire."
The Indonesian transport ministry has warned flights to stay away from the path near the volcano.