Indonesia volcano Mount Sinabung, dormant for four centuries, erupted for a second day in a row Monday, officials said.
Volcanology Agency official Muhammad Hendratno told the Chinese news agency Xinhua the volcano on Sumatra Island began spewing smoke several thousand feet into the air at 6:30 a.m. local time.
Transport Ministry Bambang Ervan said the eruption had the potential to disturb aviation in the region.
"It will depend on the direction of wind blow. Should it direct to the north, it will hamper international flight, and if the wind blow direct to the east, it will disturb domestic flight," he told Xinhua.
Thousands of Indonesians were evacuated from the slopes of a volcano on Sunday after it erupted for the first time in more than 400 years, spewing out lava and sending smoke and dust 1,500m into the air.
Mount Sinabung, in the north of the island of Sumatra, began erupting around midnight after rumbling for several days, prompting some villagers to panic before the mass evacuation got under way.
Indonesia is on the so-called Pacific Rim of Fire, an arc of volcanoes and geological fault lines triggering frequent earthquakes around the Pacific Basin. The eruption triggered the highest red volcano alert.
Two people died, one from breathing problems and the other from a heart attack, and two suffered injuries in road accidents as trucks, ambulances and buses were mobilized in the rescue operation.
