In April 2012, Brian Dunn resigned as Best Buy's CEO during an internal company investigation into allegations of personal misconduct stemming from an inappropriate relationship with a female Best Buy employee. Best Buy named Director George L. Mikan III interim CEO following Dunn's resignation. The internal investigation was released in May 2012 and alleged that Best Buy founder and chairman Richard Schulze knew of Dunn's inappropriate relationship and failed to notify the Best Buy board. Schulze subsequently resigned his chairmanship of the company. Best Buy Director Hatim Tyabji replaced Schulze as Best Buy chairman.