A park in Norwich will remain closed today as the search for a missing 55-year-old woman continues.
Later that day Gaynor's belongings, including clothing and jewellery, were found in Wensum Park by a member of the public.
Officers were able to identify Gaynor from these belongings and established she had failed to return home from work that evening.
Over the weekend, specialist search teams carried out extensive searches of the area, including water-based searches carried out with assistance from the force's Marine Unit, Norfolk Fire and Rescue Service and the Coastguard.
Divers from elsewhere in the country could be brought in as part of the search.
Superintendent Wes Hornigold said: "Our focus will now start to move to underwater searches and we're seeking help from specialist teams to help with this complex task.
"Our priority is to find Gaynor and the park will remain closed while these searches continue."
Gaynor is described as white, 5 ft 6 tall, and was wearing a white shirt and yellow tank top with a large olive-coloured coat over the top and a scarf.
She has blonde shoulder-length hair in a bob.
Anyone with information or who knows of her whereabouts should contact Norfolk Constabulary on 101 quoting incident number 427 of December 8.
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