One person was killed and 11 others injured when an explosion rocked a chemical plant in Yamaguchi Prefecture in south-western Japan early Sunday, local press reported.

The explosion occurred at around 2:00 a.m. local time at a plant belonging to leading Japanese company Mitsui Chemicals , killing a 22-year-old worker and injuring 11 other workers at the site. Glasses of windows of some 100 houses near the plant were broken due to the explosion, the report said, adding that fire-fighters are still trying to extinguish the fire caused by the blast.

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