The investigation is critical for not only understanding what happened, but for ensuring it never happens again, said an attorney for 300 Altadena residents.

As the Eaton fire spread, many areas were notified of evacuation warnings and orders well in advance. In the heart of Altadena, where all 17 reported deaths occurred, evacuation orders came hours after fire did.

All of the 17 deaths confirmed in the Eaton Fire occurred in an area where an evacuation order was delayed for hours after the blaze erupted, according to a Los Angeles Times report.

Palisades Fire initially started 10:30 a.m. Jan. 7 in Los Angeles County. It has burned 23,713 acres after being active for nine days. A crew of 4,471 firefighters has been working on site and they managed to contain 27% of the fire by Thursday evening. The blaze's cause remains under investigation.