JAKARTA, April 22 (Xinhua) -- Semeru volcano in Indonesia's East Java province erupted four times on Tuesday, spewing gray ash up to 800 meters above its summit, according to the Center for Volcanology and Geological Hazard Mitigation (PVMBG).

"The initial eruption occurred at 5:55 a.m. local time, with an ash column reaching 800 meters to the north, followed by a second eruption at 6:30 a.m., with a 700-meter ash column headed northeast for 120 seconds," said Yadi Yuliandi, an officer at the Semeru Volcano Observation Post.

The third explosion at 8:41 a.m. lasted 113 seconds, while the fourth, at 12:08 p.m., lasted 135 seconds and ejected ash up to 800 meters high.

The 3,676-meter-high volcano, located on the boundary of Lumajang and Malang regencies, is now at the second level of danger.

The PVMBG has recommended that the public avoid any operations within a 3 km and 8 km radius to the southeast of the summit, as well as avoid river courses that originate from Semeru's peak. Enditem

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