He was arrested for tax evasion and commited suicide when learning that he'll be extradited to the US. Is tax evasion such a big crime in the US that death seems like a better option to him? I mean, in my country, you might even get away with zero prison time if you pay all the taxes back as an act of goodwill before being convicted and then probably pay some fines once convicted. Then again, he clearly had some mental issues and issues with the law even prior to this whole tax evasion story... He wasn't good for the crypto market with his manipulative statements, and it seems that he generally wasn't a particularly good person, but it's still sad that he felt so hopeless that decided to commit suicide or was killed (I don't think he was, but given how he said before that if he's found dead, he's killed, it's possible).