BRITISH Transport Police have released these CCTV pictures after robberies at Bromsgrove and Northfield railway stations.
The incidents happened between 9pm and 9.45pm on May 4.
In the first at Bromsgrove, a victim was put in a headlock and had his electronic cigarette stolen.
In the second – at Northfield Station – the victim had an electric scooter taken.
Officers want to speak to the two people pictured in the images who may have information that could help with the investigation.
Anyone who recognises them should text BTP on 61016 or by calling 0800 40 50 40.
Alternatively, call Crimestoppers on 0800 555 111.