A man had to run for his safety after being threatened with a knife by a group in Guildford.
The victim was approached by four males, who are believed to have got out of a red Vauxhall car or similar, by the small parade of shops on the crossroads where Grange Road meets the other roads.
Officers are looking to find any CCTV footage of the incident to understand exactly what happened.
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A spokesperson said: “The victim is then believed to have run from the scene before the four males got back into a red coloured vehicle and drove off.
“We need your help to understand exactly what happened. Do you live or were you in the area at the time? Do you have CCTV on your property or premises which may have captured the incident? Were you driving in the area at the time and have a dash cam fitted to your vehicle?”
If you witnessed the incident or have any information which could help the investigation, including CCTV or dash cam footage, call 101 quoting reference number PR/45200069865.
Alternatively, if you do not wish to leave your name, call the independent charity Crimestoppers on 0800 555 111.