New York: CNN president Jeff Zucker has resigned from the network after failing to disclose a romantic relationship with a senior executive.

The 56-year-old Mr Zucker said in a memo to colleagues that he was “wrong” to not report the relationship as required.

The relationship was discovered during an investigation into the conduct of fired CNN anchor Chris Cuomo.

The sudden end of Zucker’s nine-year tenure stunned his newsroom and threw CNN’s future into flux at a crucial moment: The network is about to introduce a high-stakes streaming service, and its parent company, WarnerMedia, is on the verge of being acquired by Discovery Inc.

Zucker, 56, wrote in a memo on Wednesday that his relationship had come up during an internal investigation into the conduct of Chris Cuomo, the CNN anchor who was fired in December over his involvement in the political affairs of his brother, former Gov. Andrew M. Cuomo of New York.