Triggered by complaints to the board, Best Buy is exploring whether Mr. Dunn misused company assets in the course of a relationship with a female subordinate, said people familiar with the matter.

WSJ: Best Buy Founder Richard Schulze Hovers at Best Buy

The investigation by the company's board of directors is exploring whether Mr. Dunn misused company assets in the course of an alleged relationship with a female subordinate, people familiar with the matter said.

WSJ: Best Buy Details Store Closings

There is a sentence in Sarbanes-Oxley that holds the CEO of a company criminally liable for mistakes that they had no knowledge of, that were performed by subordinate employees.

FORBES: Transcript: Alfred Berkeley III