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ount Sinabung in Karo regency, North Sumatra, erupted on Thursday at 2.45 a.m., once again spewing a pyroclastic flow and volcanic ash up to 1.5 kilometers into the sky.

The eruption lasted six minutes, according to the Volcanology and Geological Hazard Mitigation Center (PVMBG).

There have been no reports of injuries as thousands of people living within a 7-km radius of Sinabung’s crater had been evacuated from the area amid escalating volcanic activity in 2015, National Disaster Mitigation Agency (BNPB) spokesman Sutopo Purwo Nugroho said on Thursday.

Since the volcano’s alert status was raised to the highest level on June 2, 2015, Mt. Sinabung has erupted numerous times.

Sutopo reminded locals and tourists not to enter Sinabung’s danger zone as volcanic activity is expected to continue, with a possibility of lava flows.