Residents in northern Hong Kong were on Tuesday demanding authorities investigate an unidentified smell that caused alarm the previous evening, sparking protests which once again led to clashes with police.Some said the smell in Tuen Mun was similar to tear gas, while others suspected it was related to shooting practice by the People’s Liberation Army (PLA) at a nearby military site. Firefighters said they did not find any unusual smell in the area. Police denied using tear gas at their…
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