Best Buy's board of directors says its investigation into Brian Dunn's personal conduct remains open even though Dunn stepped down as CEO this week. The company says the conduct it's looking into does not involve Best Buy operations or finances, but has offered no other details.

The Richfield-based electronics chain is looking into whether top company leaders failed to report information to the board of directors, according to the Star Tribune. Brian Dunn resigned abruptly last month amid an internal investigation. He's accused of personal misconduct with company resources.

A spokeswoman for Best Buy says a committee was investigating Brian Dunn's personal conduct when the CEO chose to resign. She says the issues that led to the investigation were not related to Best Buy's operations or finances. The company described Dunn's departure as a "mutual agreement that it was time for new leadership."

Four board members will lead the global search for a new chief executive officer at the Richfield-based electronics retailer. Brian Dunn resigned from the leadership position amid an investigation into his personal conduct. Interim CEO Mike Mikan is considered a candidate to permanently replace Dunn. Best Buy expects the search process to take six to nine months.

Even though Richard Schulze is stepping down, he remains the retail giant's dominant shareholder controlling more than 20 percent of Best Buy stock, according to the Star Tribune. Schulze announced he's resigning as chairman and board director from the Minnesota-based company after an internal investigation found he didn't disclose former CEO Brian Dunn's inappropriate relationship with an employee.

Founder Richard Schulze is stepping down from the board of directors sooner than planned in order to explore options for his 20.1 percent ownership stake. Last month, Schulze announced he would resign on June 21 at the company's annual meeting. An investigation found he knew that former CEO Brian Dunn was having an inappropriate relationship with a female employee. Schulze, the founder and outgoing chairman, has been with the Richfield-based electronics giant since its debut in 1966 and is the company's largest shareholder.

Best Buy founder and Minnesota native Richard Schulze has announced he is stepping down as chairman after the release of an investigation into the conduct of former CEO Brian Dunn. The investigation showed that Schulze knew about about Dunn's close personal relationship with a female employee and failed to report it to the board.

The Richfield-based consumer electronics giant hopes to hire Brian Dunn's replacement within the next nine months. Dunn resigned in April amid an internal probe that later found he had an inappropriate relationship with a female employee. Best Buy also disclosed interim CEO Mike Mikan's compensation package. He is considered a candidate to permanently replace Dunn.