Popular Russian bitcoin exchange BTC-e has been down for almost 3 hours with the official twitter saying they are having a "server maintenance".

The weird thing is, they have never had maintenance works without prior announcements in the past. And coincidently, bitcoin prices have been crashing since btc-e went down.

Are they hacked and just denying the attack by calling it a maintenance job (like most hacked websites choose to do) ??

Hopefully, btc-e comes back online soon.