WEF founder and former chairman Klaus Schwab investigated over allegations of unethical conduct and misappropriating organization funds

Klaus Schwab stepped down as chair and as a member of the board of trustees on Monday .

Schwab had announced earlier this month that he planned to resign as the non-executive chairman of WEF by January of next year .

The board received an anonymous letter with allegations against Schwab and his wife, Hilde .

The letter said it is from current and former employees of the WEF .