Mount Sinabung is located on Karo regency, North Sumatra.
The Jakarta Post reported:
The latest string of eruptions occurred on Monday, with Mt. Sinabung spewing a 5,000-meter-high column of volcanic ash and smoke from the peak of the mountain at 10:16 a.m., followed by a second eruption at 11:17 a.m. that produced a 2,000-m-high column of ash, according to the Volcanology and Geological Hazard Mitigation Center (PVMBG).