Desiree Young, the biological mother of missing 7-year-old Kyron Horman, said during an afternoon news conference she knows his stepmother, Terri Horman, is lying.

Three possible sightings of a missing Oregon boy in Yreka, Calif., have turned out to be someone else who closely resembles the boy, authorities said.

Police are investigating three possible sightings of a missing Oregon boy in Yreka, Calif., including video from a store surveillance camera that captured images of a boy matching his description.