Andhra Pradesh's Nakkapalli area, officials said. Fortunately, there were no reported casualties.
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According to District Collector Vijaya Krishnan, an «unknown gas leakage» was reported at Hetro Pharma Limited in Nakkapalli.
«Eight workers were admitted to the hospital, out of which 4 have been discharged, while the remaining 4 are also in stable condition. No casualties were reported,» the collector said.
More details are awaited.