Peter Martins, the longtime leader of the New York City Ballet, has been removed from his teaching position amid sexual harassment allegations.

The School of American Ballet said Monday night that it recently received a letter making anonymous allegations against Martins. It said an independent law firm is investigating the claims.

While School of American Ballet said none of the allegations has been substantiated, it said that it was best that Martins not teach his weekly class while the investigation is being conducted.

Photo above via New York City Ballet via YouTube.