This is pure speculation but a lot of the details fit and it looks fucking ugly. Someone may have been busted in 2012 and working with LEO. My overly paranoid mind wonders if they gave LEO any PGP keys and they've been decrypting stuff for years.
http://www.mercurynews.com/crime-courts/ci_25639176/san-jose-meth-bust-leads-arrest-suspected-key
I feel like whoever wrote this article doesn't understand how money laundry works. Wouldn't laundered cash be in a bank account, rather than sitting as cash in a meth lab?