There were some articles about Sheep Marketplace and its owner in Czech media, and since nobody seemed to post them here, I will.
In short: he is in custody from at least April 2016, waiting for trial; he can get maximum of 12 years according to one article, 18 years according to another one.
First article is from 30th April 2016.
http://brnensky.denik.cz/zlociny-a-soudy/ukradl-109-milionu-ve-virtualni-mene-20160430.html
Most of it is fluff about bitcoin, the only new-ish part I translated
The man was tracked down by police because of an account of his wife Eva Bartošová in Air Bank [Czech bank]. In January she got about 900.000 Czech Crowns [~38.000 USD] from abroad. (...clip some bullshit non-statement from the bank...) Bartošová is now investigated without being in custody for legalizing profits from a crime [legalese for money laundering].
More payments from the stolen money went to Jiříkovský's account and an account of a real estate agency, that helped him buy a house in Lužice na Hodonínsku [a small Czech village]. The house that cost 9.000.000 CZK [~380.000 USD] is legally owned by Jiříkovský's grandfather Jan Goliáš. The house was blocked by a police. "The whole case is fabricated. I will not say more, because it's my family," said Goliáš.
(...some fluff about tor, bitcoin, drugs...)
He is therefore not suspect only for theft, but for drug trade. "For really major crimes he can get maximum of 18 years of jail. The woman maximally 8," said the spokesman of South-Moravia [a part of Czech Republic he was from] prosecutor office Hynek Olma. He added the offender is in custody.
Newer article is very fresh, 16th August. It is written as an interview with the police. It contains barely new info, so I am not sure why it was written, but there we go.
Most of it is, again, fluff about Bitcoin and TOR and so on. The only interesting part:
I: How long did it take? [the investigation]
Jan Daněk (police): After about 9 months we searched his house - we seized his phones and computers. At that time the person, that was only 30 year old, magically got rich. He bought new house, new cars, luxury furniture and very expensive computers. After some time we found out that it's him. At April we made a new round of house searches and we blocked property valued on 20.000.000 crowns (~830.000 USD). He got it through laundering the money from bitcoins through foreign accounts to real money.
I: What is he doing now?
Jan Daněk: He is in a custody, he is accused of theft and from enabling drug trade and he can get maximum of 12 years of jail. His wife is also accused for helping him, but she is not in custody. The problem with the investigation [meaning of the theft I guess] is that the injured would need to claim it, and because of the nature of the deals nobody wants to do that.
So yeah, that's the news. You can run the articles through Google Translate but really I translated the only interesting bits.
From the articles it seems the police is not actually aware of the case in Florida described here on this sub - https://www.reddit.com/r/DarkNetMarkets/comments/4lsfxy/sheep_wasnt_an_exit_scam/?ref=search_posts .
The interesting part is that he is charged with theft from us.
Czech cares about us, thinks of us as people and that crimes against us are no lesser than against those who do not commit crimes. This made me happy.