A dive team have joined the search for a missing 76-year-old woman from Witney.

The search enters its fifth day as Iona, whose last name has not been released, has not been seen since 11am on Monday (February 12).

Drones and helicopters have been used but now the Avon & Somerset Dive Team will join the search after a person was spotted in the water of the River Windrush.

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The force previously said that it was growing “increasingly concerned” for Iona’s welfare but is "keeping an open mind" as the search continues.

She was last seen wearing a brown three-quarter length coat with fur around the hood, leggings and black Nike trainers.

Police described her as 5ft 6in tall and of slim build.

A Thames Valley Police spokesperson: "Enquiries are still ongoing to locate Iona, from Witney.

“Avon & Somerset Dive Team are helping us to search the River Windrush.

“However, we are keeping an open mind and following all lines of enquiry."

An eyewitness, who lives nearby, said the river had been “fast flowing” the past week and she hoped nobody was hurt.

“If someone fell in, you’d have a job getting them out,” said the elderly woman, who asked not to be named.

“We walk up there daily and it’s been so fast flowing and muddy lately,” she told the Oxford Mail on Monday evening.

Anyone with information should call 999 or visit the force's website, quoting reference number 43240068765.