The Sheep is (was) an online anonymous marketplace for drugs. The owner is Czech. The site is down, so I am told.
There is evidence that 96000 coins have been stolen from it and the thieves are still trying to launder them through tumblers
1.
To me 96000 coins are a bit too much for an online drug marketplace. Who in their own mind would keep so many coins in the hands of some website run by anonymous people? Oh, wait. BTC-E owners are also unknown.
BTC-E use a Czech payment processor
2.
BTC-E is having many withdrawal issues recently.
See what I did here?
EDIT: just to clarify - if you think I am implying "all Czech people are thieves" - then please don't. Some of my best friends are from Czech Republic.
1.
http://www.coindesk.com/sheep-marketplace-track-stolen-bitcoins/2.
http://www.coindesk.com/btc-e-exchange-banking-issues/