TOKYO – A volcano in southern Japan has erupted for the first time in 250 years, and authorities set up a no-go zone around the mountain.

Mount Io spewed smoke and ash high into the sky Thursday in its first eruption since 1768. Japan’s Meteorological Agency on Friday expanded a no-go zone to the entire mountain from previously just around the volcano’s crater.

Explosions have briefly subsided Friday, but officials cautioned residents in nearby towns against falling volcanic rocks and ash.

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