MEXICO CITY — Authorities in central Mexico say a newborn baby girl who was declared dead but later revived inside her coffin has died.

Hidalgo state attorney general Jose Rodriguez says the baby died of asphyxia, three days after being declared dead the first time by a doctor in the town of Tulancingo.

The baby was born prematurely on Monday and declared dead by a doctor.

Rodriguez said Thursday that during the wake the baby's parents heard a strange noise coming out of her little coffin and when they opened it found the baby crying. He said the baby was in stable condition in a hospital.

But on Friday Rodriguez told a press conference the baby had died Thursday night.

The doctor who declared the baby dead the first time is under investigation.