WASHINGTON – A Pasadena, Texas, man pleaded guilty today to charges related to a homicide that took place in Atascosa County, Texas, in May 2008, announced Assistant Attorney General Lanny A. Breuer of the Justice Department’s Criminal Division and U.S. Attorney John E. Murphy for the Western District of Texas. Frank Lavelle Urbish Jr., 39, aka “Thumper,” pleaded guilty today before U.S. District Judge Xavier Rodriguez to committing a violent crime in aid of racketeering activity. Specifically, Urbish accepted responsibility for his role in the murder of Mark Davis Byrd Sr. According to information presented in court, Urbish was a member of the Aryan Brotherhood of Texas (ABT), a powerful race-based, statewide organization that operates inside and outside of state and federal prisons throughout Texas and the United States. The ABT enforces its rules and promotes discipline among its members, prospects and associates through m...