The case pertains to the deaths of four members of the Dokadia family in south Mumbai’s Pydhonie area on April 27. A forensic analysis has revealed that the watermelon consumed by four members of a Mumbai family that died last month was laced with rat poison. Zinc phosphide, commonly used in rat poison, was found in the watermelon and viscera samples of the family of four that was found dead at their Pydhonie residence in Mumbai , according to a forensic report submitted by the Forensic Science Laboratory (FSL) to the Mumbai police on Thursday. FSL officials said that zinc phosphide is highly toxic and would be the reason behind the killing of the family. Zinc phosphide is used to control rodents like rats and also used as a single-dose poison in agricultural fields or stored grains. An official told The Indian Express, “We have submitted the report today.…