"FBI and Internal Revenue Service agents on Monday locked down the headquarters of Pilot Flying J, the truck stop business owned by the family of Tennessee Gov. Bill Haslam and his brother, Cleveland Browns owner Jimmy Haslam. FBI spokesman Marshall Stone told The Associated Press that the move was part of an ongoing investigation, but he would not provide additional details. FBI and IRS agents were expected to remain in the building into the evening, he said. The FBI was keeping all traffic away from the company property, and Knoxville police patrol cars and officers could be seen outside the headquarters."