EXCLUSIVE: Adrienne Roark and Jennifer Mitchell are taking on expanded roles as part of a new leadership structure at CBS News and Stations, the latest changes to the division.

Roark will serve as president of editorial and newsgathering for CBS News and Stations, taking over from Ingrid Ciprián-Matthews, who stepped down as president of CBS News and will serve as senior editorial advisor until the election. Roark will oversee the field and newsroom and newsgathering teams, as well as CBS News Radio.

Roark, who previously served as president of content development and integration, will also continue to lead the CBS Local News Innovation Lab in Dallas-Fort Worth; the Centers of Excellence she founded around data journalism, weather and specialty beats/units; and WCBS and WLNY in New York, as well as WBZ and WSBK in Boston.

Mitchell will become president of stations and digital for CBS News and Stations, with primary responsibility for CBS Stations, as well as the division's local and national digital properties. She will oversee 23 of CBS's 27 stations. That expands her portfolio to the seven stations in the East that Roark previously led, including KYW and WPSG in Philadelphia, KDKA and WPKD in Pittsburgh, WFOR and WBFS in Miami and WJZ in Baltimore, the network said. Mitchell was president of CBS Stations (West Coast and Midwest).