1. Reconstruction of the incident: A couple born in 1995 in Shanghai was poisoned in the bathroom. They were sent to the hospital for rescue, but were eventually declared dead. Sulfide ions were found in the couple's blood. Subsequently, the police also intervened in the investigation. After investigation, it was learned that hydrogen sulfide gas was mainly caused by acid rain, typhoon agitation and residents flushing toilets. In another case, the toilet was defective due to low water content, causing the couple to become poisoned. The couple died of poisoning from inhaling too much hydrogen sulfide, and police and investigative teams later investigated the source of the deadly sulfide.
Second, the final results show that the main cause of death was hydrogen sulfide gas, and the relevant investigation team is also mobilizing experts to determine the source of this gas. But last year, the Shanghai Public Security Bureau branch continued to make this decision during the family's previous criminal review and decided not to file a criminal case. However, the family members strongly disagreed and submitted a review application to the Shanghai Public Security Bureau.
The lawyer appointed by the woman’s family also thanked the Shanghai municipal government and various departments for requesting an investigation into the case. It said that in the next step, relevant experts from around the world will be introduced to cooperate with relevant departments in further investigations. After the trial, as for the final verdict, it is still not determined by filing a criminal case. What is the specific reason and where is the source of this harmful gas? I hope to get the result as soon as possible.