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Japanese authorities have moved to crack down on websites listing the ingredients and the process for concocting a deadly hydrogen sulfide gas that has been used in a spate of recent "detergent suicides."
The gas, which can form a cloud that affects neighbours and rescuers, has often triggered mass evacuations.
The Peninsula Hotel in Tokyo, for example, was forced to clear patrons from 4 floors, while in Konan City, a 14-year-old girl used the gas, causing her mother to be hospitalized and 90 of her neighbours to flee their homes.
Japanese media reported that the girl stuck a sign to the bathroom door that stated "DO NOT open! Poison gas being produced!" She...