He is wanted in connection with an ongoing rape investigation, relating to someone known to him.
Officers have conducted a number of enquiries to locate him, and will continue to do so, however as part of the investigation officers are asking the public to report any sightings to them.
Yan is described as:
• Medium build
• Approximately 5ft 9ins tall
• Brown hair
• Hazel coloured eyes
If you have seen him, or know where he is, please call 101 quoting 44210212952.
Alternatively, you can contact the independent charity Crimestoppers 100% anonymously on 0800 555 111, or anonymous online.