Police are appealing to anyone who may have recently lost or had a satellite navigation system stolen after one was recovered with a photograph saved on it.
The Garmin nüvi device was seized by Lincolnshire Police officers as part of an investigation into vehicle crime.
Officers believe it could have been recently stolen from a vehicle on Monks Road.
Located on the sat nav was a photograph labelled ‘Four Generations’. The device has been checked for any other information that might help identify the owner but without any success.
A 37-year-old Lincoln man was arrested on suspicion of theft from motor vehicle in connection with the investigation and has subsequently been bailed pending further enquiries.
Anyone who recognises the sat nav or people in the photograph should contact Lincolnshire Police on the non-emergency number 101 quoting incident 96 or 109 of February 1.
Alternatively, people can contact that independent charity Crimestoppers anonymously on 0800 555 111.