Health authorities have blamed a northwest China hospital for the theft of a newborn baby last month, saying the culprit had taken advantage of inadequate security measures.

"The First Hospital affiliated to Xi'an Jiaotong University is responsible for the theft," said Ge Yunfeng, a press official with the Shaanxi provincial health department, said Tuesday.

But the health department was unable to take disciplinary action as yet for the hospital, because the university was responsible for any personnel changes or penalize anyone in its organization, he said.

Ge Qianru, a 20-year-old peasant woman from Shaanxi, is alleged to have donned a nurse uniform and taken a baby girl from the hospital on Nov. 21, only 15 hours after she was born. She also allegedly used a fake birth certificate to board a flight to the southern Guangdong Province with the baby.

Police seized Ge in Dongguan, a manufacturing base in Guangdong, on Nov. 30. The baby was reunited with her parents two days later after a DNA test.

Yan Xiaohong, the baby's father, said he was ready to sue the hospital for the distress to his family.

"My wife was so distraught that she was beside herself," said Yan, a migrant worker who was not in Xi'an when his wife, 32-year-old Zhang Lanfang, had a Caesarean section. "The baby also had abnormal heart murmurs in the latest health check."

The baby had a cold and was feverish after she was taken to Dongguan. Ge was detained when she allegedly took the baby to a hospital in Dongguan, said Huang Lin, a police officer from Xi'an.

Yan said he had named the girl Yan Anzhe -- "An" for police and "zhe" for journalists. "The name conveys my thanks for the police officers and press who helped find my daughter," he said.

Meanwhile, Yan said he was collecting evidence to file the lawsuit and would demand 110,000 yuan in compensation. But as the baby was still in hospital, Yan said he was unable to get the birth certificate, a crucial document for the lawsuit.

Management of the hospital, however, insisted they too were victims in the incident.

"It's very hard for us to monitor every single person coming and leaving the hospital every day," said Li Xu, president of the hospital. "But we did everything we could to help find the baby, and will continue to assist authorities in their investigation."

He said the hospital had tightened security by deploying two more guards outside maternity wards and allowing entry only to patients and one family member at a time.

In August and September last year, eight newborn babies died from hospital-acquired infections at the same hospital. Xi'an Jiaotong University was later forced by health authorities to remove the hospital boss for covering up the scandal for more than two weeks.