Jeff Zucker on Wednesday announced his resignation as the president of CNN, telling employees he was questioned about a past relationship he did not disclose, CNN said.

In a memo, that was reported by CNN, Zucker said, “As part of the investigation into Chris Cuomo’s tenure at CNN, I was asked about a consensual relationship with my closest colleague, someone I have worked with for more than 20 years. I acknowledged the relationship evolved in recent years. I was required to disclose it when it began but I didn’t. I was wrong. As a result, I am resigning today.”

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Zucker did not name his colleague in the memo, but the relationship is with Allison Gollust, the chief marketing officer for CNN. Gollust is remaining at CNN.

Gollust, in a memo of her own said, “Jeff and I have been close friends and professional partners for over 20 years. Recently, our relationship changed during COVID. I regret that we didn’t disclose it at the right time. I’m incredibly proud of my time at CNN and look forward to continuing the great work we do everyday.”

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It is reported that Zucker took over CNN in 2013, at a time when industry observers said the network was facing an identity crisis.

Zucker revamped the network’s programming. A veteran of NBC, where he climbed from a producer on the “Today” show to president of the entire network, Zucker brought an eye for news and talent.

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He also brought a hands-on management style and gained the trust and respect of talent and staffers throughout the network.

Jeff Zucker was named Chairman, WarnerMedia News and Sports in March, 2019. He has also served as President of CNN Worldwide since 2013.

Zucker oversees all of WarnerMedia’s live programming, including all divisions of CNN Worldwide and Turner Sports. At CNN, that includes the US television network, CNN International, HLN, and CNN’s digital properties. His sports portfolio includes Turner Sports, and Bleacher Report.