Nine Months and a 14-Foot Boat: How Olivia Lone Bear Was Really Found
Lissa Yellowbird-Chase motored out onto Sanish Bay in Lake Sakakawea on July 31, 2018. She had a 14-foot outboard motor boat, a sonar device, and nine months of watching government agencies fail a family from her own nation.
She flipped on the sonar. The screen showed a truck resting 31 feet below the surface, a quarter mile from the home of Olivia Lone Bear’s father.
Olivia had been missing since October 24, 2017.
The Night She Left
Olivia Lone Bear was 32 years old, a mother, and a member of the MHA Nation living on the Fort Berthold Indian Reservation in New Town, North Dakota. On the night of October 24, 2017, she left Sportsman’s Bar near her home and never came back.
Her father found her phone and wallet at the house and reported her missing. What followed was the kind of jurisdictional chaos that Native families across the United States have been documenting for generations.
Tribal Police took the initial report. In January 2018, the Bureau of Indian Affairs assumed primary responsibility. The FBI’s Minneapolis office was involved at various points, as was the Mountrail County Sheriff.
Everyone had a piece of the case. Nobody owned it.
Her brother Matthew described a “revolving door” of BIA agents assigned on short rotations with no continuity and no urgency. The family pushed for a water search beginning in November 2017, just weeks after Olivia vanished.
Law enforcement said boats were coming. Months passed. The boats never came.
A Member of the Nation Who Filled the Gap
Lissa Yellowbird-Chase belongs to the MHA Nation, the Mandan, Hidatsa, and Arikara Nation, the same people whose homeland is Fort Berthold. She founded the Sahnish Scouts in 2013, a nonprofit built after she watched oil field workers disappear during the Bakken boom and watched their families get nowhere with agencies that didn’t prioritize their cases.
The Sahnish Scouts work cases that official searches abandon. They bring sonar equipment, ground-penetrating radar, trained search dogs, and the kind of cultural knowledge that federal agents cycling through on short rotations simply don’t have.
They’ve worked across North Dakota, South Dakota, Minnesota, Iowa, Montana, Oklahoma, Nebraska, and California. They don’t wait for a federal agency to take ownership.
They go.
When Yellowbird-Chase connected with the Lone Bear case in the summer of 2018, she put the boat in the water. “As soon as we got over there, boom, we flipped the sonar on and we picked it up,” she said.
She called authorities, and Three Affiliated Tribes police and the Mountrail County Sheriff responded. North Dakota Fish and Game divers entered the water and confirmed what the sonar had already shown: Olivia Lone Bear, buckled into the passenger seat of her truck.
The FBI’s Minneapolis office handled DNA confirmation afterward. That’s where their contribution to the timeline sits.
Getting the Story Right
A viral post about this case has been spreading across social media, and it gets several key facts wrong. It says Olivia was found in May 2018 after five months of searching.
She was found nine months after she disappeared, on July 31, 2018. The post credits “civilian drone operators” with locating the submerged truck.
That’s not what happened. What happened was Lissa Yellowbird-Chase, a sonar device, and a nonprofit the federal government didn’t fund.
Getting this right isn’t a detail correction. It’s the whole point of the story. The real lesson isn’t a generic list of search tools — it’s that Indigenous-led search organizations, built by community members from the nations involved, can find what federal agencies miss.
The Sahnish Scouts found Olivia because Yellowbird-Chase knew this land, understood the gap, and had spent years building an organization designed to fill it.
The Questions That Remain
The last text from Olivia’s phone, sent the night she disappeared, read “Good Bye.” Her last Facebook activity came at 11:38 p.m.
Then nothing.
She was found buckled into the passenger seat, not the driver’s seat. How the truck entered the lake has never been publicly established.
The autopsy produced limited cause-of-death findings. In May 2022, more than four years after her death, the FBI obtained a search warrant for Google location history data from the night she disappeared.
A $10,000 reward remains active for anyone with information about what happened to Olivia. Call 1-800-CALLFBI.
What This Case Points Toward
Olivia Lone Bear’s story is part of a documented national crisis. Missing and murdered Indigenous people disappear at rates that far exceed the national average, and they disappear into a system where no single agency has clear accountability on tribal land.
The Sovereign Bodies Institute maintains the most comprehensive database of missing and murdered Native people in North America, because federal tracking systems have never done it adequately. It’s a starting point for understanding the scale of what’s happening.
Indigenous-led search organizations like the Sahnish Scouts exist because the gap is real and it isn’t closing. They take cases when official channels stall.
They bring technical capability and cultural knowledge together in a way that outside agencies can’t replicate. Community organizing, social media visibility, and sustained public pressure have also kept cases alive that would otherwise go cold.
The Lone Bear family’s refusal to let Olivia be forgotten is part of why Lissa Yellowbird-Chase knew to go looking. A Native woman, from Olivia’s own nation, in a 14-foot boat on Lake Sakakawea, found what nine months of multi-agency involvement could not.
That’s not a footnote. That’s the story.
Reporting based on Indianz.com, NBC News, High Plains Reader, KFGO, Wikipedia: Sahnish Scouts, Sovereign Bodies Institute.