According to his sister, the boy said as he and Owen tried to escape, "my brother was running out across a field, an open field, and there was three men shooting at him, with rifles."

"I believe to this day that they shot my brother that night, and I think they probably killed him and brought him back to the school and buried him," she said.

With the completion of the anthropological search, it will be up to the families of the missing students to go to a state court to ask a judge to order exhumations. One family has already filed suit for the return of a relative's remains.

Krell said she only hopes to give her brother a proper burial.

"I would take him and put him down with my mom and dad in their cemetery," she said. "I hope I get that chance."