Police are appealing for information following an incident of harassment in Aylesbury.
At approximately 1am on Sunday 17 November on Cromwell Avenue, the victim, a girl in her late teens, has been followed and harassed by the offender.
A resident of a nearby property came out of their house and asked the offender to leave the victim alone. The resident was then confronted by the offender who threatened him with a knife.
Both the victim and offender left the scene in different directions.
The offender is described as a black man, between 30 and 40-years old, and of a stocky build. He is described as having a bald head and was wearing blue jeans with a dark coloured jacket.
Investigating officer PC Cristianne Doran, said: “I am appealing for any witnesses to this harassment incident to please come forward.
“Anyone with information or footage relating to the incident should call 101 or make a report on our website, quoting reference number 43240556054.
“Alternatively, for anonymity, you can also call the independent charity Crimestoppers anonymously on 0800 555 111 or via its website.”