Human remains found on Wednesday in a field in Sealand, Deeside belong to vet Catherine Gowing, said senior investigating officer Detective Chief Inspector Mark Pierce:
"The post mortem confirmed our fears and the results have been passed to Catherine's family.
"We are also awaiting identification of further remains found on the banks of the River Dee in Ferry Lane, Higher Ferry, Chester, on Friday. The search continues for further remains and any other evidence which will assist this investigation."
More top news
The Duchess of Cambridge has been on maternity leave since the week before Easter.
The Duke and Duchess of Cambrige have been together for 15 years and will have three children under the age of four.
News of William and Kate’s third child was announced on September 4 and the duchess went on maternity leave on March 22.