NEW YORK

CNN President Jeff Zucker abruptly resigned Wednesday after acknowledging a consensual relationship with another network executive — an entanglement that came to light during an investigation of now-fired anchor Chris Cuomo.

Zucker said he was asked about his relationship with longtime aide Allison Gollust as part of the Cuomo investigation, which revealed that the former anchor had aided his brother, then-New York Gov. Andrew Cuomo, as he navigated a sexual harassment scandal.

“I acknowledged the relationship had evolved in recent years,” Zucker wrote in a memo announcing the end of his nine-year tenure. “I was required to disclose it when it began but I didn’t. I was wrong.”

A memo to employees from Jason Kilar, CEO of CNN parent WarnerMedia, said three senior executives at CNN would run the network on an interim basis.

Zucker, 56, has been an industry leader since he was executive producer of the “Today” show in the 1990s. In the following decade, he ran NBC’s entertainment division, where he was instrumental in putting the reality show “The Apprentice” starring Donald Trump on the air.

He rose to become chief of NBC Universal and left in 2010 when Comcast took over.

In a statement Zucker said he wished that his tenure at CNN had ended differently but, “it was an amazing run. And I loved every minute.”