Mount Sinabung, one of most active volcanoes in Indonesia, erupted on Saturday evening, spewing ash to the sky, but no casualty and further evacuation were reported, official said here on Sunday.

The volcano located in Karo district of North Sumatra erupted at 23:05 p.m. Jakarta time with hot ash slid off the east of the crater by up to 4 kilometers, Sutopo Purwo Nugroho, spokesman of national disaster management agency revealed.

"The height of the eruption could not be determined as it took place at night and there were many clouds," he told Xinhua by phone.

"Rains of hot ash occurred in several place in Karo district, but it did not trigger further evacuation," Sutopo disclosed.

The 2,600-meter (8,530-foot) Mount Sinabung erupted on June 29, shooting columns of ash by up to 4,000 meter to the sky.

That was months after its intermittent eruption from September to February that killed 15 people and internally displaced more than 30,000 others.

Many of the evacuees have returned homes, but 14,130 others remain at the evacuation shelters, Sutopo said.

The spokesman said that currently the evacuees need about 130 thousand pieces of roofs for their shelters.

Mount Sinabung is among more than 120 active volcanoes in Indonesia, which is prone to seismic upheaval due to its location on the "Pacific Ring of Fire."

The volcano rumbled back in September 2013 after being dormant for 400 years. The Indonesian transport ministry warned flight to stay away from the path near the volcano.