A bicycle was stolen from Primrose Hill in Daventry after thieves cut through the bike lock.
The bike had been chained up about 6pm on Tuesday February 3, but it had been taken by 7.30am the following day.
The bike was a black and green Cannondale Trail 7 similar to the one pictured.
Witnesses, or anyone who knows anything about this theft can call Northamptonshire Police on 101 or Crimestoppers anonymously on 0800 555111 or use the anonymous online form at www.crimestoppers-uk.org.