Charges have been dropped against Aisling Brady McCarthy, the Irish nanny accused of murdering an infant in her care in the US.

A US judge has agreed to let an Irish nanny accused of killing a one-year-old Massachusetts girl go free on bail while authorities review medical evidence ahead of her trial.

Lawyers for an Irish nanny accused of killing a baby in the US said medical experts hired by prosecutors have concluded that the child suffered bone fractures weeks before her death when she was not in the nanny’s care.