A young boy was surrounded by a group who threatened to stab him while heading to Buckingham Park near Martin Dalby Way at around 7pm on Thursday (18/8).
The group then ran away and thankfully the victim was not injured.
The group are described as five boys and two girls. One boy was described as black, with afro-style hair, wearing a black puffa jacket.
Investigating officer, Detective Sergeant Thomas Booth, based at Aylesbury police station, said: “We are appealing for any witnesses, or anyone who may have information about what happened, to please come forward.
“Anyone with information can contact Thames Valley Police by calling 101 or making a report online, quoting reference 43220370573.
“Also, if anyone has any CCTV, dash-cam or mobile phone footage from around the time of the incident, you can submit this via our online portal.
Alternatively, if you wish to remain anonymous, you can contact the independent charity Crimestoppers on 0800 555 111 or online.”