The World Economic Forum announced on Tuesday that it has launched an investigation into its founder, Klaus Schwab, following a whistleblower letter alleging misconduct by the former chairman.

The founder quit after the board moved to investigate whistleblower allegations, which he denies, including use of luxury property and travel.

The board, which includes ex-U.S. Vice President Al Gore and Jordan's Queen Rania, took note that Schwab created the "leading global platform" for "dialogue and progress" during his 55 years of "relentless leadership at the helm of the Forum."