Search and Seizure Warrant, by U.S. District Court (Middle District, TN)
September 13, 2012
Location: Franklin, TN, USA

Abstract: The U.S. Secret Service, investigating the Romney tax return extortion attempt, obtains a search warrant to allow for the seizure of Michael M. Brown's Bitcoin wallet.  They did seize much computer equipment, some personal effects and a notepaper containing passwords.

 - http://mbdonationfund.com/images/documents/search_warrant.pdf

Further discussion here:

- http://bitcointalk.org/index.php?topic=123956.0