kyron richard horman (born september 9, 2002) is an american boy who disappeared from skyline elementary school in portland, oregon, on june 4, 2010, after attending a science fair. local and state police, along with the fbi, conducted an exhaustive search for horman and launched a criminal investigation but have not uncovered any significant information regarding the child's whereabouts. his disappearance sparked the largest criminal investigation in oregon history.