Authorities found the deceased bodies of the couple, both of whom were 39-years-old, and three of their children, Markis, 19, Jeremiah, 14, and Abigail, 14, on March 26.
The county coroner is working on recovering the body, which Van Patten believed at 1:10 p.m. was still in the water.
This June, 2014, file photo shows some of the Hart family at the annual celebration of "The Goonies" movie in Astoria, Ore.
According to the report, one of the now-missing children, Devonte Hart, would sneak over to a neighbor's house and ask for them for tortillas, peanut butter, cooked meat or fruit like apples.
Lab results on the driver's body found she had a blood-alcohol concentration above the state's legal limit of 0.08 percent, Sgt Powers said. A worker visited the home March 23 and he said the Hart family packed up and left soon after.
The Mendocino County Coroner's office recovered the body on Friday about seven miles south of where the SUV was seen entering the rain-swollen river.
Authorities have said that data from the vehicle's software suggested the crash was deliberate, though the California Highway Patrol has not concluded why the vehicle went off an ocean overlook on a rugged part of coastline.
Investigators have not come up with a motive but say it appears the incident was intentional, The FBI is deploying their Behavioral Analysis Unit to assist and try to understand what happened.
Three other children are missing, but presumed dead.
Rescuers in the United States have found the body of a woman while searching for a missing Indian family of four who are feared drowned in a California river.
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. He is one of three children still missing after the vehicle went over the cliff.
Long before the crash, Sarah Hart pleaded guilty in 2011 to a domestic assault charge in Minnesota over what she said was a spanking given to one of her children. "These items were of a personal nature and will not be described further at this time", the highway patrol said. Authorities believe Devonte, 15, Hannah, 16, and Sierra, 12, may have been in the vehicle and were swept out to sea.
And authorities have said social services officials in OR contacted the West Linn Police Department about the family in 2013 while they were living in the area.
The Thottapillys were reported missing by other family members on April 8.