A blue racing bike was stolen from outside a Northampton supermarket.
The bike was locked up outside Morrisons in Victoria Promenade when it was taken sometime between 5.30pm and 7.30pm on Friday, August 28.
The bike, which is pictured, was a Giant Defy 1 model.
Witnesses, or anyone who knows anything about this incident, can call Northamptonshire Police on 101.
Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111 or use the anonymous online form at www.crimestoppers-uk.org.