Kyron Horman Update: Ore. Police Seek Video of People Who Saw Missing 7-Year-Old the Day He Vanished

Kyron Horman (Personal Photo)

PORTLAND, Ore. (CBS/KOIN/AP) In the days following the disappearance of Kyron Horman local and national media outlets interviewed his classmates, their parents and some of his teachers about the last time they saw the 7-year-old  the day he vanished - now the Multnomah County Sheriff is asking to see those tapes, hoping they might provide some clues as to Kyron's whereabouts.

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The Multnomah County Sheriff's Office asked local and national news organizations on Thursday to send in copies of any video interviews with students, parents, school officials or community members who reported seeing Kyron Horman after 8:45 a.m. on June 4.

Sgt. Travis Gullberg says the sheriff's office won't issue subpoenas and says release of the material is voluntary.

Kyron vanished after a science fair at Skyline Elementary School, outside Portland, on June 4. His stepmother, Terri Horman, was the last person known to have seen him.

Kyron's biological mother, Desiree Young, said she believes the 7-year-old's stepmother planned the disappearance just as the boy was asking to move out of the stepmother's home.

"Without a doubt, I think it was very planned," Young said in a Tuesday interview with NBC's "The Today Show."

Young reiterated on the morning show her accusation that Kyron's stepmother, Terri Horman, was involved in his June 4 disappearance, though police have not named her a suspect in the case.

Anyone with information on the whereabouts of Kyron Horman is asked to call the Multnomah County Sheriff's tip line at 503-261-2847.

Complete Coverage: Kyron Horman Missing