[ebilgenius]

Looks like the FBI and DEA were involved as well as several other country's police agencies, with Europol acting as coordinator. Lots of money moving across countries means lots of taxes probably not being paid, hence the IRS.

[MrDresden]

Well the IRS would only have been involved if the money flowed into the US and/or to a US citizen.

They have no jurisdiction abroad

[narag]

The markets are used for transactions around the world. Probably a lot of them in the USA.

[MrDresden]

Which fits with what I wrote. Either a US citizen or crosses US borders. If not, then the IRS has no jurisdiction.