India, Sept. 23 -- Even three weeks after the death of a 10-year-old girl student of a Noida private school, police are yet to figure out the exact cause behind the incident, with investigators awaiting results of the toxicological (viscera) examination.

On September 4, the Class 6 student reportedly went to the washroom during a Teacher's Day programme and collapsed. The school staff took her to a nearby hospital, where doctors declared her brought dead.

The post-mortem did not reveal any external or internal injuries to explain the death. Forensic doctors preserved the viscera and sent it for chemical and toxicological analysis, said police on Monday. "As of now, the cause of death remains pending the viscera report," said a police of...