Police in York are appealing for witnesses and information about an attempted robbery on Heslington Road.
It happened between 7pm and 7.30pm on Sunday 22 January when two men assaulted a teenage boy and tried to steal his property.
The victim managed to escape but suffered a minor facial injury.
One suspect has been arrested and enquiries are ongoing to trace the second suspect.
Investigators are appealing to anyone who was in the Heslington Road area on Sunday night and may have witnessed the incident or captured it on dashcam, and to local residents who have private CCTV or doorbell cameras that may have caught the incident or the two suspects, who were riding bikes at the time, to contact them.
Anyone with information that could assist the investigation contact North Yorkshire Police on 101 and pass information for incident number 12230013102
If you wish to remain anonymous, you can pass information to Crimestoppers on 0800 555 111.
A 21-year-old man was arrested on suspicion of attempted robbery and remains in custody at this time.