Image:

A farmer watches as Mount Sinabung releases pyroclastic flows in Tiga Pancur, North Sumatra, Indonesia, on Saturday. Binsar Bakkara / AP

A volcano in western Indonesia unleashed a new powerful burst high into the sky on Saturday, sending hot ash far down the mountain's slopes, an official said.

Authorities have been closely monitoring 8,070-foot -high Mount Sinabung on Sumatra, one of Indonesia's main islands, since June 2, when its status was raised to the highest alert level due to the growing size of its lava dome.

Hot ash tumbled down the slopes of the mountain as far as 2 miles southeastward on Saturday, said Wendy Cahya, an official at the mountain's monitoring post.

No injuries were reported from the latest eruption, he said.

Cahya said that as of Saturday evening, 11 avalanches of hot ash had been recorded, with volcanic ash released as high as 1.2 miles into the air.

Volcanologists have warned that smoldering rocks mixed with hot gases may tumble down from the mountain at any time.

More than 2,700 people from villages within the danger zone of 4.4 miles from the crater have been evacuated to temporary shelters. No casualties have been reported from this month's eruptions.