Police believe thieves used gas to blow up a cash machine in Huntingdon to steal the money.
The blast wrecked the ATM and a telephone box at Mayfield Road in the town.
The explosion was heard by residents in the early hours of Thursday 3 January 2019.
Three men stole the cash machine and made off in a black Audi.
- Police are appealing for witnesses and anyone with information should call 101 or Crimestoppers on 0800 555111.