Lumajang, E Java, Jan. 8 -- Mount Semeru, located on the border of Lumajang and Malang in East Java, erupted Thursday morning, sending volcanic material approximately 700 meters above the summit, officials reported.

"The eruption occurred Thursday (Jan. 8) at 07:14 a.m. local time, with the ash column reaching roughly 700 meters above the 4,376-meter summit," said Semeru observation post officer Sigit Rian Alfian.

He added that the ash plume appeared white to gray and was thickest toward the northwest. The eruption registered on seismographs with a maximum amplitude of 14 mm and lasted about 120 seconds.

Semeru recorded four eruptions on Thursday, starting at 00:33 a.m. local time.

The first ash column reached 700 meters, followed by ...