NEW YORK (CNN) -- Diane Sawyer will take over nightly news anchor duties for ABC when Charlie Gibson retires from "World News" at the end of this year, a network spokesman confirmed Wednesday.
Sawyer, 63, will be the second woman to be the solo host of an evening newscast for an American broadcast TV network.
Sawyer will take the chair in January, ABC's Jeffrey Schneider said.
Gibson, 66, and Sawyer worked together for years on ABC's morning show -- "Good Morning America" -- before Gibson was promoted over Sawyer to anchor ABC's "World News" in May 2006.
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