<prompt> Human: Yesterday, I received both an email and a text saying Chase has been trying to contact me regarding possible fraudulent activity on my account. Weird, since I havent been contacted by them at all before those notifications.I called in, and it seems like its standard fraud check procedure until the service rep comes back and tells me that my account is under review by another department which has locked my information, and he is unable to provide any more information at this time other than the fact that the review will take up to 10 days.Ive asked for the name of the department, what type of review this would be, etc., but to no avail.Ive been expensing a lot of items for work 90 of my charges, and I expect that may have had a hand in triggering this random review.Also, my coworker, whom Ive added as an AU, decided to refill his friends online poker account multiple times. This may also have triggered as a potential fraudulent activity Received card 1012 2 AU Account frozen 1018 3,042I have my checkingsavings account with Chase, and also have 5 credit cards with them CF, CFU, CSP, CSR, Ritz. Began my relationship with Chase in 2009.Since then, Ive never had my account frozen and under review. Ive had a couple of fraud alerts Ive had to call in for, but not having my account frozen for up to 10 days.Is there a real potential for Chase to close my account? I havent cancelled any cards with them, and Id really like to keep my Ritz card. I will call them back before the days closing, and update you guys on what happens. EDIT : Accounts are back to normal!  <response>: Also, my coworker, whom Ive added as an AU, decided to refill his friends online poker account multiple times. This may also have triggered as a potential fraudulent activityWhat?!!! Why would you add a coworker as an authorized user and why would they spend money on a friend multiple times? Im not surprised Chase would suspect fraudulent activity ... 