A doctor decapitated a woman’s baby during a “nightmare” delivery in Georgia, a lawsuit has claimed.

Dr Tracey St Julian is being sued for gross negligence by Jessica Ross and Treveon Taylor, whose son died at Southern Regional Hospital during a complicated birth.

Several nurses are also being sued for concealing the incident.

A lawyer claimed Dr St Julian had been too forceful with the baby during the delivery.

“When the womb was opened, the feet came out, the body came out, and there was no head,” said lawyer Roderick Edmond, who represents the parents, and is also doctor. He alleged Dr St Julian had applied “ridiculously excessive force” to the baby.

“Dr St Julian came in, and she, in the process of trying to deliver the baby, pulled on the baby’s head and neck so hard, and manipulated them so hard, that the bones of the baby’s skull, face, and neck were broken.”

Ms Ross and Mr Taylor, both 21, attended a news conference on Wednesday in Atlanta where their lawyers announced the suit against Dr St Julian and Southern Regional Medical Centre, a hospital in Riverdale.

“They were so excited about the birth of their first child,” added lawyer Cory Lynch. “Unfortunately, their dreams and hopes turned into a nightmare that was covered up by Southern Regional Medical Center.”

The Medical Examiner’s office and Clayton County Police are investigating the case, which they were made aware of on 13 July, though the death occurred on 9 July.

According to the attorney’s statement, Dr St Julian attempted to deliver the baby vaginally using different methods including “applying traction to the baby’s head.”

The baby was not able to be delivered vaginally due to shoulder dystocia, where the baby’s shoulders become stuck in the birth canal.

Dr St Julian, a board-certified obstetrician and gynaecologist, did not proceed with a caesarean delivery at the appropriate time, as previously requested by the couple, the lawsuit says.

Mr Lynch alleged in graphic detail the measures staff had taken to cover up the the horrific incident, including wrapping the baby’s body in a blanket and propping his head up to make it look like it was still attached.

He claimed that medical staff had failed to report the incident.

The couple only found out what had happened to their son while making arrangements at the crematorium, four days after his death, according to the lawsuit.

In a statement, Prime Healthcare Services, who own the hospital, said its’ “heartfelt thoughts and prayers are with the family and all those impacted by this tragic event”.

“Our commitment is to provide compassionate, quality care to every single patient, and this loss is heart-breaking,” the hospital said.

It added that Dr St. Julian was not an employee of the hospital, and it had “taken the appropriate steps in response to this unfortunate situation”.

The suit alleges gross negligence, fraud and intentional infliction of emotional distress. It seeks unspecified compensatory damages, in addition to covering the cost of the infant’s $10,000 funeral.

The couple’s lawyers have said the case highlights the higher rates of infant mortality for black women.

The BBC has contacted Dr St Julian’s office for comment.

Dr St Julian has not yet filed her Defence and has not issued a public comment on the case.