A man is said to have grabbed a shop assistant and then proceeded to 'steal perfume' from a Boots store in Oxfordshire.
The incident occurred on Market Place in Wantage at around 5.20pm to 5.25pm on August 24.
Thames Valley Police said a person was driving through the town and allegedly got out of their car and grabbed the suspect's rucksack.
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This caused him to come off his bike and the suspect ran off along Wallingford Street, the force has said.
Thames Valley Police is now appealing for witnesses to the robbery in the town.
A spokesperson for Thames Valley Police said: "If you have any information or CCTV footage, please call 101 and quote the occurrence number 43230380922."
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