I have not that I know of (I don't use social media). My best guess of what happened (little to no evidence) is that it's somehow money laundering related.
You could always do what Patio11 mentioned in his latest newsletter and buy a share in Chase and then call investor relations.
FYI: not accurate. A bank (etc etc) cannot will not tell a person they suspect or have actual knowledge of money laundering, but they also cannot facilitate it. There is a tiny bit of wiggle room around the edges if e.g. an investigating agency says "Definitely don't touch this until we tell you to" but that is an edge case on an edge case.