After a week of smoke, ash and flames, officials with Cal Fire San Diego announced Thursday that the Border 2 Fire, located in the Otay Mountain Wilderness area, is now 100% contained.

As of Thursday, firefighters had the footprint of the 6,625-acre blaze, dubbed the Border 2 Fire, nearly 96% surrounded, according to Cal Fire.

So far, many clues to the origins of the deadly Eaton fire, which started in the area just after 6 p.m. that evening and went on to kill 17 people, have pointed to the brushy hillside where a tangle ...