Kyron Horman's stepmother speaks out for the first time

Medford, Ore. — Kyron Horman’s stepmom spoke out for the first time, nearly six years after the Portland boy went missing.

Terri Horman spoke exclusively to People Magazine and said she did not kill her 7-year-old stepson, who vanished from his elementary school in Portland in 2010. Terri has never been a suspect or a person of interest, but Medford resident and Kyron’s biological mother Desiree Young has never hid her suspicions about Terri.

“We need to know what she did that day, where she was, and not just another lie version, the real truth,” Young said.

Terri said she dropped Kyron off at the school’s science fair on June 4th and never saw him again.

“I saw him walking down to his room. My vision of him is the back of his head almost at the door. That’s what I see when I sit here and think about him,” Terri said in her first media interview to People Magazine. “That’s my last thought.”

But Young, who believes Terri had something to do with her son’s disappearance, said she needs to answer the real questions, and not with media.

“If you’re innocent and you want to fix this then call Multnomah County Sheriff’s Office and sit down and interview,” she said.

Terri told People she didn’t know anything was wrong until Kyron didn’t get off the school bus that day, and that she did everything she could to help investigators.

“I have been in his life since he was three days old,” she told People. “He is every bit my son.”

When asked what happened to Kyron, Terri responded, “The answer is what I’ve said 100 times. I don’t know.”

But Young isn’t hiding her suspicions.

“She’s the one person who was with him that day. She left with him, she knows where he’s at,” she said. “Why the five-and-a-half years of silence if she’s innocent?”

Terri failed a polygraph test three weeks into the investigation. Deaf in her left ear, she told People she wasn’t able to understand the person administering the test. She has since divorced Kyron’s father, Kaine.

Young told NBC5 new searches are underway in Multnomah County and they haven’t given up hope of finding Kyron.