KNOXVILLE, TN (News Sentinel) -- Claims of unpaid fuel rebates apparently led to Monday's raid on the West Knoxville headquarters of Pilot Flying J as part of a federal criminal investigation, the company's CEO said.

"It appears to be centered on a very insignificant number of customers and the application of rebates — that the rebates owed to the customers were not paid," CEO Jimmy Haslam said at a short news conference Tuesday.

"We of course disagree with that. It does not involve any tax issues. To my knowledge, there was no evasion of state or federal taxes involved."

Haslam said he didn't know the exact number of customers and didn't know what documents were seized during the search by agents of the FBI and Internal Revenue Service.

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