Scores of residents have returned to their still smoldering neighborhoods even as the threat of new fires persisted.

The largest wildfire to hit Los Angeles this week rapidly tore through homes and communities, whipped by winds that sent embers skyward.

The Kenneth fire erupted at the border of Los Angeles and Ventura counties on Thursday, the latest blaze to ravage the area.

Investigators are considering an array of possible ignition sources for the huge fires that have killed at least 10 people ...