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Anyone who can identify the man is urged to ring 01303 289180 giving reference FY/14539 or Kent Crimestoppers anonymously on 0800 555 111.
The cash was withdrawn on Friday, August 5.
The man police would like to speak to is described as 5ft 8ins, with shaven and receding hair and wearing a white shirt and dark trousers.
A total of £5,000 was allegedly fraudulently withdrawn from banks in Ashford Road, Maidstone and in Ashford.
Police have released CCTV images of a man they want to speak to in connection with alleged frauds at banks in Maidstone and Ashford.