KTLA-TV Channel 5 morning news anchor Barbara Beck quit Wednesday in an apparent dispute with producers and station management.
Beck, one of the original members of the morning news team that is about to celebrate its 10th anniversary, last appeared at the anchor desk Monday.
Station executives declined to comment on the reason for Beck's departure, and Beck could not be reached. However, station sources said tensions had been brewing for months between Beck and morning news executive producer Marcia Brandwynne over the direction and management of the morning news.
Carlos Amezcua, Beck's co-anchor, said he was "stunned and devastated" by her resignation.
Amezcua said the news team would discuss Beck's departure during this morning's newscast.
KTLA is owned by Tribune Co., which also owns the Los Angeles Times.