A midwife at Aberdeen Maternity Hospital has been suspended after colleagues raised concerns about her clinical practice.
An internal investigation by NHS Grampian upheld staff concerns and Grampian Police has been called in.
The force has begun looking into the midwife’s care of 22 mothers and babies over a period of two and a half years.
She has also been referred to the Nursing and Midwifery Council, according to the BBC.
NHS Grampian chief operating officer Dr Pauline Strachan said: “I can reassure the public our concerns focus on the practice of one individual midwife.
“We are not investigating any deaths and have no reason to believe there was any systematic failure in an otherwise excellent service.”