Indonesia's Mount Merapi volcano in Central Java erupted again on Saturday.

Indonesia's Mount Merapi volcano in Central Java erupted again on Saturday, spewing hot ashes as high as 2 kilometers, covering up the radius of 10 kilometers around the mountain, official said.

"There was an explosion at 00:50 a.m. Jakarta time Saturday ( 1750 GMT Friday), glaring hot lava can be seen," Heru Saparwoko, Volcanology Agency official in Yogyakarta told Xinhua by phone.

Mount Merapi with 2,968 meters high first erupted on Tuesday, followed by renewed eruptions on Thursday and Friday, killing at least 33 people and displacing over 40,000 others.

There is no signal that the volcanic activity will decline.

Mount Merapi is one of Indonesia's 129 active volcanoes.

The previous eruption of Mount Merapi in 2006 killed two people. A 1994 eruption claimed 60 lives. A major eruption in 1930 killed more than 1,000 people.