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Mount Sinabung in western Indonesia unleashes new powerful burst high into the sky

  • A farmer watches as Mount Sinabung releases pyroclastic flows in Tiga Pancur, North Sumatra, Indonesia, Saturday, June 13, 2015. The volcano, which was put on it highest alert level last week, has sporadically erupted since 2010 after being dormant for 400 years. (AP Photo/Binsar Bakkara)

    A farmer watches as Mount Sinabung releases pyroclastic flows in Tiga Pancur, North Sumatra, Indonesia, Saturday, June 13, 2015. The volcano, which was put on it highest alert level last week, has sporadically erupted since 2010 after being dormant for 400 years. (AP Photo/Binsar Bakkara)  (The Associated Press)

  • Mount Sinabung releases pyroclastic flows as seen from Tiga Pancur, North Sumatra, Indonesia, Saturday, June 13, 2015. The volcano, which was put on it highest alert level last week, has sporadically erupted since 2010 after being dormant for 400 years. (AP Photo/Binsar Bakkara)

    Mount Sinabung releases pyroclastic flows as seen from Tiga Pancur, North Sumatra, Indonesia, Saturday, June 13, 2015. The volcano, which was put on it highest alert level last week, has sporadically erupted since 2010 after being dormant for 400 years. (AP Photo/Binsar Bakkara)  (The Associated Press)

  • Villagers watch as Mount Sinabung releases pyroclastic flows in Tiga Pancur, North Sumatra, Indonesia, Saturday, June 13, 2015. The volcano, which was put on it highest alert level last week, has sporadically erupted since 2010 after being dormant for 400 years. (AP Photo/Binsar Bakkara)

    Villagers watch as Mount Sinabung releases pyroclastic flows in Tiga Pancur, North Sumatra, Indonesia, Saturday, June 13, 2015. The volcano, which was put on it highest alert level last week, has sporadically erupted since 2010 after being dormant for 400 years. (AP Photo/Binsar Bakkara)  (The Associated Press)

A volcano in western Indonesia has unleashed a new powerful burst of volcanic ash.

Authorities have been closely monitoring 2,460-meter (8,070-foot) -high Mount Sinabung in North Sumatra province since June 2, when its status was raised to the highest alert level due to the growing size of its lava dome.

Wendy Cahya, an official at the mountain's monitoring post, says hot ash tumbled down the slopes of the mountain as far as 3 kilometers (2 miles) southeastward on Saturday.

Mount Sinabung is among about 130 active volcanoes in Indonesia, which is prone to seismic upheaval due to its location on the Pacific "Ring of Fire."

The volcano has sporadically erupted since 2010, after being dormant for 400 years. An eruption last year killed at least 17 people.