Mount Sinabung's activity has increased since August lastyear and the alert for the volcano in North Sumatra province has been placed atsecond highest level.
No casualties were reported as authorities had earlier urgedpeople to stay at least 3km from the crater.
Indonesia straddles the "Pacific ring of fire"with nearly 130 active volcanoes, more than any other country. Sinabung hadbeen inactive for centuries before it erupted again in 2010. An eruption in 2014 left 16 people dead, and one in 2016 killed seven./.