One of the Hart family mothers was drunk — and her wife and two of her kids were drugged — when she drove off a Northern California cliff late last month, authorities say.

Jennifer Hart intentionally drove off the coastal cliff, authorities believe. Jennifer Hart, her spouse Sarah and three of their adopted children died in the crash, and three of their other adopted children are missing. An unidentified body was found Saturday near the crash site.

Jennifer Hart had an alcohol level of .102, according to the Mendocino County Sheriff's Office. The agency also said Sarah Hart and two of the children who died in the crash had diphenhydramine, an active ingredient in Benadryl, in their blood.

Benadryl can make people sleepy. Toxicology results for the third child who died in the crash aren't yet complete, the sheriff's office said.

Sarah Hart sent a middle-of-the-night text message to a friend March 24, saying she was so sick she might have to go to the hospital, according to 911 records obtained by The Oregonian/OregonLive.

The text message came only hours after Washington child protective services first visited the family's home and days before their SUV was found March 26.

The nature of Sarah Hart's apparent illness is unknown.

Lt. Shannon Barney, a Mendocino County Sheriff's Office spokesman, said Friday that authorities can't rely on dental records to identify the body that was recovered last weekend because authorities haven't been able to find a dentist who treated the children.

He said it will take a couple weeks to get DNA results back from a lab and positively identify the body.

A final report detailing autopsy findings hasn't been released.

— Jim Ryan

Everton Bailey Jr., Lizzy Acker and Shane Dixon Kavanaugh of The Oregonian/OregonLive staff contributed to this report

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