The vehicle itself and the four members of the Thottapilly family have not been recovered from the Eel River, which remains too unsafe for divers to enter, but searchers along the banks located numerous items consistent with a Honda vehicle and interior, and items consistent with a family traveling on vacation, the Mendocino County Sheriff's Office said in a statement.
The juvenile has not yet been identified but authorities believe the child had been in the SUV. Carpenter said "a lot about this case is unusual ... baffling nearly".
In a statement on Thursday, police said they are continuing their efforts to search for the missing children.
Jennifer Hart's blood alcohol content was at.10 based on authorities' preliminary results, above the legal limit of.08.
The finding from toxicology tests performed on the body of Jennifer Jean Hart marked the latest clue divulged by investigators seeking to unravel the fate of the woman, her wife and their six adopted children.
An unidentified body was found Saturday near the crash site.
He noted the Yukon had traveled some 23 metres along an unpaved roadside pullout before running off the cliff, leaving behind no skid or brake marks, indicating the vehicle may have been driven off the cliff intentionally.More news: Starbucks Corp (SBUX) Position Lifted by Morgan Stanley
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Sarah Hart reportedly also had diphenhydramine in her system.
A body that may be one of the remaining three missing children was recovered on April 7.
Police hadn't found the bodies of Devonte Hart and his adoptive sisters, 16-year-old Hannah Hart and 12-year-old Sierra.
"Several items have been positively identified, by family members, as belonging to the Thottapilly family", it said. The neighbors said the children complained to them about being mistreated by their parents and asked for food, saying their parents withheld meals as punishment.
By the next morning, the Harts had left town.
The remains of Jennifer and Sarah Margaret Hart, both 38, and three of the children were found in the wreckage of a GMC Yukon after it ran off California Highway 1 and plunged over a steep embankment onto the rocky shoreline below.
While positive identification is pending, it is believed the body is that of Soumya Thottapilly, 38, who was on a road trip with her husband, Sandeep Thottapilly, 42, and their 12-year-old son Siddhant and 9-year-old daughter Saachi from Portland to San Jose, traveling in their maroon 2016 Honda Pilot SUV. They were last heard from while visiting the redwood forests of California's far north coast.