KNOXVILLE, TN (News Sentinel) --  Dozens of FBI and Internal Revenue Service agents on Monday raided the West Knoxville headquarters of Pilot Flying J, operator of the largest travel center network in North America, while executing a search warrant.

FBI supervisory special agent Marshall Stone said federal agents arrived at the corporate headquarters on Lonas Road as part of a "ongoing investigation."

Stone declined to provide specifics of the raid.

"The FBI secured our headquarters today and informed us they are investigating Pilot Flying J," Pilot CEO Jimmy Haslam said in an email statement Monday afternoon.

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