An 82-year-old woman was the victim of a daylight sex attack in Buckinghamshire described by police as "horrendous".
The woman was assaulted as she walked on a pathway near Buckingham Road, Bletchley, at about 13:00 BST on Friday.
A man pushed her to the ground and attacked her before walking off.
The suspect is described as white and in his early to mid-20s, with a large build.
He was wearing a black beanie hat, black jacket and black trousers. He was carrying a black rucksack over both shoulders.
Police have appealed for witnesses.
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