Banned him for 7 days but I'd like to ask admin for demotion if possible.
EDIT: It might be possible that he got hacked and hacker was screwing with him? Don't have evidence of this though.
Evidence:
(http://www.kaise123.com/imgupload/images/2013/04/12/VkLo9.png)
(http://www.kaise123.com/imgupload/images/2013/04/12/je1y3.png)
(http://www.kaise123.com/imgupload/images/2013/04/12/sOK7B.png)