Noida, July 27 -- Two men, including a contractor cleaning a sewage treatment plant (STP) tank and a security guard who tried to rescue him, died after allegedly inhaling toxic gases at a housing society in Noida's Sector 150 on Sunday, police said.
Police said the incident took place around 3.30am at the residential society. It was not clear why the contractor was carrying out the cleaning at this hour. A case has been registered and four people from the society have been detained in connection with the matter, police said. P6
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