#1 - Sept. 27, 2010, 10:12 p.m.
Someone?
From what I can see, Yee, your character was just deleted, it wasn't stripped of gear or gold and no other characters were touched. This usually means that your account was not compromised in the traditional sense, which is a good thing because it means recovery will be infinitely easier.
Two things could have happened. Either, you deleted your character, which is usually done when one is angry or otherwise not fully appreciating their actions or someone you likely knew acquired your account information and logged on simply to cause you grief by deleting your character.
Now our restoration policies allow us to restore characters in either case but if you did not delete your own character then it is very important to take steps to further protect your account. Make sure you change your password, you can also check your system to see if you picked up any keyloggers or other malicious programs.
Battle.net Account Security Awareness
http://us.battle.net/security/
Account and Computer Security
http://us.blizzard.com/support/article/30794
How to Identify Fake or Phishing Emails
http://us.blizzard.com/support/article/25133
Battle.net Authenticator
http://us.blizzard.com/support/article/24986
You can submit an in-game petition to request that the character be restored. Only report the account as compromised if you are certain that is what happened, it is a different process all together if someone else may have accessed your account.
Good luck.