You must have done something Illegal. Did you transfer funds to Address that is used for money laundering / drugs / Blackmarket?
Wow. I had no idea they were doing this. You might be right. I checked some other threads about this issue and apparently this has been done since at least last year when they recognize possibly illicit funds.
OP, see this thread for more information:
https://bitcointalk.org/index.php?topic=1663636.0;allHere are a couple snippets:
A suspicious deposit is one where we suspect that it is related to a crime or an active law enforcement investigation. I'm going to need more information about how you got the funds.
Thanks for the heads up about this. I'm going to be very, very careful about which coins i send there in the future. We really need better answers for privacy and fungibility.
![Undecided](https://bitcointalk.org/Smileys/default/undecided.gif)