Peter Liguori arrives to the FOX Broadcasting Company upfront. (DIMA GAVRYSH/ASSOCIATED PRESS)

The company made it official on Wednesday morning that Liguori is leaving at the end of the year. His COO position is being eliminated.

“I am particularly grateful to Pete for tackling some pretty challenging special assignments, including the launches of our joint venture networks – The Hub, OWN, and 3net,” Discovery president and CEO David Zaslav said in a statement of Liguori, who had joined the company in December of ’09, after a long run at NewsCorp, where he most recently had been chairman of entertainment for the Fox Broadcast Company (home of “American Idol,” “Family Guy,” etc.), president and CEO of FX Networks (home to “Nip Tuck,” “The Shield,” “Sons of Anarchy,” etc), senior vp of marketing for a joint venture at Fox. Before that, he was senior vp marketing at HBO.

(FYI, OWN is the much-written-about joint venture between Discovery and Oprah Winfrey’s Harpo company, The Hub is a less-written-about joint venture between Discovery and Hasbro toy company, and 3net is the now occasionally-written-about 3D network that is a joint venture among Discovery, Sony Corporation and IMAX.)

“It has been a privilege to have contributed to Discovery’s mission and to have helped so many networks and brands grow their ambition and accelerate their creative momentum,” Liguori contributed to the official announcement, adding a “special word of gratitude” to Zaslav “for giving me the opportunity to stretch new creative muscles in the nonfiction space.”