A cellphone possibly belonging to a member of the Hart family, all eight of whom are presumed to have died when their SUV mysteriously plunged off a California cliff, was discovered Wednesday near the crash site, authorities said.
Family and friends of the Harts told detectives the family traveled together and was rarely apart, the sheriff's office said.
There were no signs of the other two children, authorities said Saturday.
Mendocino County Sheriff Tom Allman has described the crash as "a crime." Three of the children are still missing, but presumed dead.
Three days later, the bodies of his wife Late Lus Meri and their newborn child were recovered on Tuesday, 28 of March 2018.
Authorities are investigating whether a surveillance video from Fort Bragg, California, shows one of the women a day before the SUV was found. California Highway Patrol investigators are working with the Federal Bureau of Investigation to try to enhance the video.
Investigators have said they believe the missing children - Devonte, 15, Hannah, 16, and Sierra, 12 - were inside the vehicle at the time of crash.
Island of Mindanao shaken by magnitude six quake
Fire officials in Ventura County, close to the epicenter of the quake, also reported no damage from the natural disaster . Officials at the Orange County Fire Authority were not aware of any earthquake-related damage in the area it serves.
Jennifer and Sarah Hart had adopted all six children and recently lived in Woodland, Washington.
The SUV carrying the family plummeted 100 feet (31 meters) from a highway near Mendocino, California.
Argyropoulos said she was unaware of a 2011 domestic assault conviction against Sarah Hart. From there, it's believed the family stayed the night around there, since Jennifer was seen checking out of a Fort Bragg grocery store at around 8:15 am on March 25.
"I'm leaning to say that this is more of a crime than it is a crash". On Tuesday, Alexandra Argyropoulos, a former friend of the family, told The Associated Press she alerted OR welfare officials about Jennifer and Sarah Hart because she felt they were withholding meals from their six adopted children.
Ashley Harlan was found dead in a home in Olathe in January.
Devonte, a black boy who is still missing, drew national attention after he was photographed in tears while hugging a white police officer during a 2014 protest.