Police are urging cash machine users to take extra care when withdrawing cash in Wolverhampton after devices known as 'Lebanese loops' have been placed in ATMs in the city.
The devices consist of a strip or sleeve of metal or plastic that is inserted into the ATM's card slot by criminals.
When the ATM tries to eject the card, a 'lip' at the end of the loop prevents the card from being ejected, and the machine draws the card back in, leaving the victim to believe that their card has been retained.
PC Phil Upton from the Merry Hill neighbourhood policing team said: "We are urging ATM users to take extra care when withdrawing cash by shielding the keypad while they enter their PIN and to be aware of anyone acting suspiciously around them."
CCTV images have been released of two men police want to speak to after a number of incidents have been reported from customers and a bank on Trysull Road, Merry Hill since December.