A robber threatened a 12-year-old boy before stealing his bike.
The Voodoo Malice mountain bike was taken from outside Sainsbury’s on Ings Road, at 8.10pm on Monday.
The suspect rode off on the bike in the direction of Denby Dale Road.
And police have released this image of a man they want to speak to in connection with the incident.
The bike is black with gold coloured rims, white handle grips and white pedals.
Anyone with any information, or who recognises the man pictured should contact DC Donna Atkinson on 101.