I think you can have news about this in the last row of this presentation in Wikipedia (named "Arrest and prosecution") : https://en.wikipedia.org/wiki/Mark_Karpel%C3%A8s

Even more here: http://www.scmp.com/news/asia/east-asia/article/1857199/french-mtgox-ceo-japan-charged-embezzlement-amid-bitcoin-fraud

Maybe are the last. At least are the last (official) I have found.