Police are warning Lincoln residents to be careful when using cash machines in the city, after two were found to have been tampered with in one day.
The incidents were discovered on April 10 at Morrisons supermarket on Tritton Road and Tesco Express on lower High Street.
The offenders attached a device to where cash is dispensed, meaning when a customer uses the machine the cash does not come out.
Once the customer has left, the offenders return to take the money stuck near the opening, police said.
Officers are asking residents to be vigilant and report any cashpoint or ATM they feel may have been tampered with.
Additionally, if you are suspicious, do not try to use the machine and if possible tell store management.
Anyone who feels they may have been a victim of a similar offence should call Lincolnshire Police on 101, or Crimestoppers anonymously on 0800 555 111.