Police have arrested a secondary school chemistry teacher for allegedly putting the formula for a toxic gas online.A chemistry teacher at a Hong Kong secondary school has been arrested for allegedly putting instructions online on how to make a poisonous gas.
The instructions featured images and listed the raw materials needed, weights and mixing ratios, Cheng said, adding the amount of harm that could be inflicted with different concentrations was also provided.including the production of stink bombs. The force said the teacher also published an article online to incite others to make a device able to shoot out fire in July 2019, during the anti-government protests.
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