COTTON COUNTY, Oklahoma - Teresa Speir, 52, has not been seen since she failed to show up for work at a convenience store on Sunday. The Oklahoma State Bureau of Investigation served a search warrant Monday on a trailer home and a vehicle of one of her neighbors in Cotton County.

The OSBI is not saying what it found. But we're told the evidence in the car is what has them so concerned. But, they are not looking at this case as foul play.

That car belongs to David Daniel, who was shot in the head last year and survived. His brother, Daryl, is a convicted murderer.

Speir's friends said all this just doesn't add up. They said she is not a woman who would just disappear.

"It's not like Teresa to be late for work. She'll come in a half an hour early," one friend said. "She's a fun loving lady, loves animals, loves people. She's not a vindictive person."

OSBI said it has spoken to several people, including David Daniel. But no arrests have been made.

Agents have also searched the 500 acres surrounding Speir's land.

If you have any information about where Speir may be, call the OSBI at (800)-522-8017.