Three workers die after inhaling toxic gas while cleaning a septic tank at a factory in Delhi, according to reports. The incident occurs at a factory in Mundka. The workers reportedly enter or are involved in the septic tank cleaning process and suffer exposure to hazardous fumes, leading to their deaths. After the incident, authorities investigate the circumstances and respond at the site. Mint reports that the police arrest three people, including the factory owner, in connection with the deaths. The arrests indicate an inquiry into accountability and safety practices related to the septic tank cleaning operation. India Today similarly reports the deaths of three workers following toxic gas inhalation during the cleaning work. The accounts describe the event as a workplace incident tied to confined-space or septic tank maintenance, with toxic gas exposure identified as the immediate cause. The reports do not provide additional details in the excerpts about the specific gas, whether safety equipment was used, or whether a post-mortem or lab findings were released.