Customers who allegedly withdrew money fraudulently from Chase Bank ATMs using an illegal scheme that blew up on TikTok over the summer could soon have to cut hefty checks back to the bank.

These people were able to withdraw funds by writing checks to themselves and immediately withdrawing funds before the checks bounced. Normally, the bank follows the industry standard of making a portion of any check available to customers before the funds clear. However, a temporary glitch allowed customers to withdraw more substantial amounts than typically allowed before a check clears.

Now the bank is suing four customers who allegedly owe the bank nearly $662,000

Now, in addition to returning the funds they allegedly accessed illegally, Chase is demanding the defendants cover the bank’s legal fees and other expenses related to the cases.