new delhi, June 17 -- Three days after a seven-year-old boy drowned at a water park on Delhi's GT Karnal Road, the Delhi Police on Monday said they exhumed the body for an autopsy to ascertain cause of death and registered a case of causing death by negligence against "Just Chill Water Park". The child, identified as Mohammad Asad, a resident of Nehru Vihar, had visited the park on Friday. He drowned while swimming in one of the pools, but no police complaint was filed immediately. Police said they received a complaint about the incident only on Saturday, following which a formal investigation was launched. "We received a complaint from the dead boy's uncle. The child's body was buried after he was declared dead at Param Nursing Home in Son...