Related reading:    Abducted baby back with family

Police obtained surveillance video that showed Zhang took a baby out of the hospital.

Six suspects in the case have been detained.

The National Health and Family Planning Commission on Tuesday urged the Shaanxi Health Department to dismiss those responsible and improve the management of its medical system.

Mao Qun'an, spokesman for the state health authority, said leaders of the National Health and Family Planning Commission were closely following the case.

The Shaanxi health authority issued an emergency notice of safety inspections of the province's health system to improve its management.

Sun Zhenlin, deputy director of the health department, said the three top leaders of the Fuping hospital had been dismissed and Zhang's license had been revoked.

Guan Fangtian, who has worked as a midwife for 30 years in a hospital in Xi'an, capital of the province, said there were rules on how doctors and nurses dealt with newborn babies, even if the baby had medical issues or died.

"My hospital has strict regulations for the processing of dead babies, and babies with defects would also be sent to their parents without any private processing by the doctors and nurses," Guan said.

Yang said police had no information so far indicating that other doctors or nurses helped Zhang and there was no evidence her family members knew either.

"We are paying full attention to the reports of people who said their babies were also taken by Zhang, and we are continuing our investigation," Yang said.

malie@chinadaily.com.cn