Lucy Letby: Why are medical experts disputing evidence?

The new report goes beyond the embolism question Dr Lee has spoken out on previously. BBC News has only seen a summary as a full copy has not been made publicly available.

On Tuesday, Dr Lee said the panel believed all of Letby’s victims actually died of natural causes or because of poor medical care.

“There was no medical evidence to support malfeasance causing death or injury,” he told a news conference, before listing what he alleged were a number of wider failings at the Countess of Chester Hospital’s neonatal unit where Letby worked.

The report deals with the cases of all 14 babies in turn.

In one case in which Letby was convicted of killing a baby by injecting air into its stomach, the panel said their analysis indicated a cause of death arising from natural respiratory complications and chronic lung disease.

Additionally, they said doctors had failed to detect a bacterial illness and should have prescribed antibiotics.