Irish nanny Aisling Brady McCarthy is being sued for wrongful death by the parents of the child she cared for.

The 37-year-old Cavan native returned from Boston last year, after murder charges against her were dropped after the medical examiner in the case changed it is ruling to an undetermined cause of death, rather than homicide.

Ms Brady McCarthy had spent almost two-and-a-half years in prison awaiting trial for the murder of one-year-old Rehma Sabir, was found unresponsive at her Massachusetts home in January 2013 while in her care.

The Sabir family have filed an action seeking damages for wrongful death by malicious, reckless or negligent conduct.