Indonesia's volcano in Central Java re-erupted on Wednesday, spewing hot ash by up to 1, 500 meters high and spread by up to 50 km to all direction, the death toll rose to 191, officials said.

Mount Merapi of 2,968 meters high has erupted again continuously since after midnight Wednesday, said an official at Volcanology Agency in Yogyakarta province.

"The ash spread to all direction by up to over 50 kilometers away," he told Xinhua.

National Disaster and Mitigation Management Agency said that the number of fatality climbed to 191 people on Wednesday with 598 people suffering from serious injuries.

The number internally displaced person also rose to 343,909 people, an official of the agency told Xnnhua by phone from Jakarta.

However, the number of evacuees are less than the number of people living in evacuation zone of over 1.3 million people, according to the agency.

The volcanology agency has extended the risky zone to 20 kilometers.

Mount Merapi started eruption on Oct. 26, then it is followed by a series of eruptions.