Xiaodong Diallo, who worked in the medical field, is the mother of the 16-year-old boy, identified by police only as Li. The boy’s uncle, Wu Chen, told reporters last week that the girl did not want to be identified and that her parents took her to another doctor for help.

Wu said his niece needed to use the toilet but the doctor refused because he thought the child might have a kidney infection. He said the girl used too much water and then her body started to deteriorate.

The authorities are now investigating whether they had any knowledge that the girl was being treated for a kidney infection before her death, according to a statement by the police.

Diallo’s daughter, meanwhile, is pregnant; her husband told reporters that he had heard of her health problems on Feb. 5 when he was driving with the family.

According to Xinhua, Li’s body was taken to a nearby hospital, to be buried on Wednesday. The girl’s death is “very tragic” but not a homicide, according to Xiaojun Tang, a Xinhua correspondent and a professor at the Shanghai Normal University of Forensic Science.

A few hours after police announced the girl’s death, Xi said there was no need for an autopsy, according to a transcript aired by state media.

“In the past, the girl was given medication. The situation was managed properly. I have nothing to add on this. I feel sorry,” a reporter for Xinhua, Hua Zhiqiang, said, adding that a team was gathering data.

Wu told reporters that police were making good progress.

“In the past, we were able to find the culprit and arrest him. This time around, we are finding the culprit. We have made an investigation so we can find the culprit,” Wu told CNN. He said authorities are focusing on the death’s impact on the family.

It was not clear what prompted the girl to use the toilet as she was suffering from kidney stones, Xinhua reported.

Authorities have said there was no indication any medical condition was present for the girl at the time she died. Investigators asked the hospital where the girl died to submit medical records for follow-up, and the doctor said there was nothing particularly unusual about the girl’s condition.

A medical report that was released by the hospital showed “frequent use” of laxatives and painkiller