http://www.pokemon.co.jp/info/2011/03/at110314_02.html
It's in Japanese, so I translate (literal translations)
"Proceedings of 2011 Japan national decision ポケモンワールドチャンピオンシップス" Notice of discontinuation
March 18, 2011
Dear Customer
Pokemon Co.
This time, "Earthquake northeastern Pacific Ocean," and tell the heartfelt sympathy to everyone affected by made against his family and everyone of you people that sacrifice, I would like to respectfully condolences.
Impact of earthquakes in each direction, given the social situation and the "2011 Japan National Conference ポケモンワールドチャンピオンシップス decision" with regard to the holding of a convention that any decision to cancel a representative of each area we have now published We decide.
In Pokemon Daisuki Club, I will also stop sending out acceptance and participation certificate request to join the competition.
To everyone of you had been looking forward to the tournament Sorry, thank you for your understanding that by any means.
However, with regard to future events, and social conditions for everyone to enjoy love Pokemon Kudasaru consider what to do after it, in turn, so we will announce our plans to pay official in our now thank you for your patience.
Once again, I wish sincerely to rehabilitation and reconstruction as soon as possible.