CINCINNATI —

Months after former Kroger CEO Rodney McMullen resigned, a judge ruled he does not have to reveal why he left.

In March, Kroger cited an investigation into McMullen's personal conduct but provided little additional information. Advertisement

Grammy-nominated singer Jewel and a partner are suing Kroger based on their involvement in getting the grocery chain's annual wellness festival off the ground.

Jewel's attorneys argued that questioning McMullen about his resignation could impact his credibility as a trial witness and be relevant to "an allegedly corrupt corporate culture at Kroger."

On Friday, a judge ruled that McMullen’s resignation is “not relevant” to the lawsuit.

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