<prompt> Human: So I previously was going to assist a friend and make a deposit into my backup bank account and then transfer the money to his account. I no longer live near the bank in question, but lets say its a Southeast powerhouse of a bank...Did a mobile deposit of a check from my primary account to this banks account two Fridays ago. It was over the max, so I paid a slightly higher fee. Chose the option to where itd be posted at 8pm that day. Transaction history shows that it was posted that Friday...and then on Monday, the bank snatched it and decided to put a hold on it. Called and was told that it was an internal decision and it would not be released until the 17th Tuesday. Apparently nobody else I could talk to on the phone, and since Im 4 hours from a branch, nobody I could see in person. Got a letter in the mail yesterday in regards to the hold which states the following as their reason: We have confidential information that indicates that the check may not be paidThis devastated me, as I currently have 8 times that amount in my primary bank account. The backup was my primary until I left the region and desired somewhere with branches near me. I deposited near the same or higher amounts into it before and never had holds. I still have a portion of my paycheck deducted into that account for savings purposes!At this rate, I should have just mailed the check to my friend. Im now terrified as to what will happen when the release occurs Tuesday and I transfer to his account. When I lived near a branch I would do transfersdeposits into folks accounts without any holds. No idea now since Im not near a branch...Im just curious if anyone has any insight as to why a bank would do such a hold.  <response>: The bank may have noticed or suspected that you are depositing on behalf of a friend, and placed a hold to make sure everything is on the up-and-up.Normally, banks expect you to use your own back account to handle your own affairs, and not those of other people. This is part of efforts to prevent money-laundering and fraud. 