Japanese Volcano Mount Aso Erupts in Plumes of Ash

PHOTO: In this image taken from a surveillance camera observed from Kusasenri and released by Japan Meteorological Agency, a column of black smoke rises from Mount Aso, Kumamoto prefecture, southern Japan Monday, Sept. 14, 2015. PlayJapan Meteorological Agency via AP
WATCH Japanese Volcano Mount Aso Erupts in Plumes of Ash

Mount Aso, a volcano on the southern Japanese island of Kyushu, erupted Monday, sending huge plumes of black and then white smoke 6,560 feet into the air, and spewing volcanic rock and steam, the Japan Meteorological Agency said.

Authorities raised the alert level for the area, banning people from approaching within 1.25 miles of the volcano.

The region is sparsely populated, and with no homes in the immediate are there were no reports of injuries or damage.

The Japan Meteorological Agency said it was unclear whether there was any volcanic flow from the mountain.

PHOTO: In this image taken from a surveillance camera observed from Kusasenri and released by Japan Meteorological Agency, a column of black smoke rises from Mount Aso, Kumamoto prefecture, southern Japan Monday, Sept. 14, 2015.Japan Meteorological Agency via AP
In this image taken from a surveillance camera observed from Kusasenri and released by Japan Meteorological Agency, a column of black smoke rises from Mount Aso, Kumamoto prefecture, southern Japan Monday, Sept. 14, 2015.

"This could happen a few times," Yasuaki Sudo, a researcher at the Aso Volcano Museum, told NHK. "The most important thing is to stay out of the danger zone."

There are more than 100 volcanoes in Japan, which sits on the "ring of fire," which circles the Pacific Ocean. Mount Aso had a smaller eruption in August and eruptions in 2014 that disrupted tourism in the area.

The Associated Press contributed to this report.