Devices used to prevent card fraud were removed from cash machines at Barclays Bank in Norwich.
Norfolk police said the anti-skimming devices were taken from the cash machines on Red Lion Street on February 7 and February 13.
Police have now released a CCTV image of the two men they would like to speak with following the incidents.
• Anyone who may recognise the men, or anyone with information, should contact Op Solve via 101 or investigate@norfolk.pnn.police.uk quoting crime reference 36/9179/19.
• Alternatively contact Crimestoppers anonymously on 0800 555111.
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