ABC appoints Robach as '20/20' co-anchor

NEW YORK (AP) — ABC News says Amy Robach will be David Muir’s new co-anchor on the “20/20” newsmagazine.

Robach has reported for the newsmagazine and is best known at ABC for her work on “Good Morning America,” where in recent years she has detailed her own battle with breast cancer. ABC News President James Goldston said Monday that Robach will continue to report for the morning show.

She replaces Elizabeth Vargas on the newsmagazine. Vargas recently left ABC News and has signed a production and anchoring deal with the A&E Networks.

Robach has conducted interviews with Tonya Harding, Gretchen Carlson, Hulk Hogan and Monica Lewinsky for ABC News.