Thieves in Salford have stolen a significant amount of cash from an ATM after digging a 50ft tunnel under a building to get to the cash.
The theft happened between midnight and 6am on Friday 14 March 2014 at the cash machine at Tesco on Liverpool Road, Eccles.
The thieves tunnelled under nearby wasteland overnight and in to the shop, where they stole cash boxes containing a substantial sum of money. The thieves then disappeared back through the tunnel and escaped with the cash.
Officers believe the thieves may have spent a number of months digging the tunnel, because of the amount of planning that was involved and complex nature of the tunnel structure.
DS Mark Toker from Salford Division said: "These people had obviously spent a long time plotting this crime and I doubt they would have been able to keep their plans secret for all that time, without telling others about their elaborate scheme.
"The offenders must have spent long periods of time in the area over the last few months, which people may have noticed.
You may have seen people acting suspiciously on Friday night, possible covered in soil.
"I would ask anyone with any information about the robbery to call us as soon as possible."
Anyone with information is asked to call police on 0161 856 5353 or call Crimestoppers anonymously on 0800 555 111.