A volcano has been erupting in Mount Soputan in North Sulawesi Island in eastern part of Indonesia since Friday and the head of the country's volcanology agency Surono warned Saturday that possible stronger explosion could emit all dangerous material.
"Stronger explosion may happen, which can emit dangerous materials from the crater," he told Xinhua.
The volcano has been frequently roaring and erupting since Friday, spewing white smoke up to 1,500 meters high, said Surono.
Surono said that there was no casualty or damage, as the eruption only triggered rain of ash by up to the radius of 8 kilometers.
"There is no need to displace the villagers. The frequency of the eruption has decreased since 2 a.m. Saturday," he said.
The agency has forbidden people to enter the areas in the radius of 6 kilometers from the crater since the mount increased seismic activity, according to Surono.
The agency have raised the status of the volcano to the second highest alert, he said.
Mount Soputan is among the country's 129 active volcanoes, 66 of which are located in high-density population areas, Java and Sumatra islands.