NBC replaces 'Rock Center' chief

NEW YORK (AP) - NBC News is replacing the top executive at Brian Williams' "Rock Center" newsmagazine, among a handful of other changes.

NBC said Tuesday that Rome Hartman, the show's inaugural executive producer, will be replaced by Alex Wallace. Wallace is a senior vice president at NBC News and has been NBC News President Steve Capus' chief deputy. In the short term, Hartman will work on elections coverage.

"Rock Center" has scored some journalistic coups in its first year, including Bob Costas' interview with Jerry Sandusky, but has struggled to find an audience.

Capus said Antoine Sanfuentes, currently the Washington bureau chief, will fill Wallace's deputy role and Ken Strickland will be Washington bureau chief.