Police are hunting a man who pushed a 15-year-old girl, emptied her handbag on the floor and made off with cash.
The mugging happened around 7pm on Wednesday when the girl was walking along Green Bridge, between Candleford Court and Pace garage in Buckingham.
She noticed a man behind her but before she knew it, she was being robbed.
The man is tanned and bald with short sideburns. He is roughly 6 ft 2 ins and has a medium build.
He was wearing a black Puffa-style body warmer, a black jumper, black combat style trousers and black Ralph Lauren shoes.
If you have any information, call 101.
Alternatively, contact independent charity Crimestoppers anonymously on 0800 555 111 or online at www.crimestoppers-uk.org