Quinton Keel had recently been demoted along with two other supervisors for allegedly punishing three whistle-blowers who tried to disclose information regarding the mishandling of military personnel's remains to federal investigators.
"It is not surprising that Mr. Keel chose to resign," the special federal investigatory agency said in a statement. "The Office of Special Counsel's report of investigation, which will be made public in mid-March and which the Air force received in late January, found that Mr. Keel retaliated against the whistle-blowers."
The two other supervisors remain on staff, awaiting disciplinary action.
CNN reported the office is investigating claims brought forth by the three whistle-blowers that they were discouraged from speaking out about mismanagement, and in one case were even threatened with termination.
Notable deaths of 2014 [PHOTOS]