Kroger CEO Rodney McMullen is resigning immediately from the grocery store chain following an investigation that found his personal conduct was “inconsistent” with the company’s ethics policies.

Cincinnati-based grocer Kroger announced on Monday the abrupt resignation of its CEO Rodney McMullen, citing "personal conduct" that was inconsistent with company policy as the reason for his ousting.

Rodney McMullen, Kroger chairman and CEO, is stepping down after an internal investigation into his personal conduct.