A 13-year-old local boy has been assaulted on the cycle track between Hob Moor and Tadcaster Road in York.
Fortunately the victim did not require hospital treatment but has been left distressed by the incident.
Officers are appealing for information about the assault and are urging anyone who witnessed the incident to come forward.
In particular, they are appealing for information about a white man aged 19 to 20-years-old, about 6ft tall of medium build with short curly ginger hair. The man was wearing a black hoody and blue or black trousers and was seen to by riding a blue BMX bicycle.
Anyone with information that could assist the investigation should contact police on 101, select option 2, and ask for Constable James Mills. You can also email james.mills@northyorkshire.pnn.police.uk
Please quote North Yorkshire Police reference number 12150209471.
If you wish to remain anonymous, you can pass information to Crimestoppers on 0800 555 111.