Police say a man has been left feeling vulnerable and isolated after thieves made off with his mobility scooter.
It was taken from Hatfield and Stainforth station on July 16 at around 3pm.
Investigating officer PC Jade Snaith said: “The 60-year-old victim had parked his scooter close to the shelter on platform one at around 1.45pm after being advised by a guard that he could not take it onto the train.
“At around 2.45pm a man cycled towards the platform. He spotted the scooter, tampered with it and even boarded it before making a call on his mobile phone.
“He then pushed the scooter into the waiting room and boarded a train.
“At around 3pm another male cycled into the station, heading straight for the scooter.
“He also tampered with it before taking his bike to the front of the station and leaving it there.
“He returned to the scooter, pushed it out of the waiting room and towards the station exit. He then cycled away, dragging the scooter alongside him.”
Officers believe the man photographed could have vital information about the incident and urge him, or anyone who recognises him, to come forward to assist with their enquiries.
PC Snaith added: “This incident has left the victim feeling extremely vulnerable and isolated since he can no longer get around and cannot afford to buy a new scooter.
“It is vital that we find the person responsible and if possible return the scooter to him.”
Anyone with information is asked to contact British Transport Police on 0800 40 50 40, or text 61016, quoting reference PSUB/B5 of 14/08/2015.
Information can also be passed anonymously to Crimestoppers by ringing the free number 0800 555 111.