The World Economic Forum closed an investigation on its founder Klaus Schwab on Friday, clearing him of any wrongdoing, and appointed BlackRock CEO Larry Fink and Roche Holding's vice-chair Andre Hoffmann as interim co-chairs of its board.

An investigation conducted by the World Economic Forum's board on Friday cleared the body's founder Klaus Schwab and his wife of wrongdoing, after a probe into whistleblower complaints."Following a thorough review of all facts,

In his Aug. 12 resignation letter, Brabeck-Letmathe said he had personally witnessed a “toxic work environment” for several months and that the only way to move forward was for the board to seek an “amicable agreement” with Schwab to resolve the dispute. Brabeck-Letmathe has served for years on the Forum’s board.