Investigators reclassified the disappearance of two missing Iowa cousins as an abduction case Friday after an FBI dive team failed to find their bodies in a lake near where they were last seen a week ago. Lyric Cook-Morrissey, 10, and Elizabeth Collins, 8, vanished after riding bikes near Meyers Lake in Evansdale, a small town in northeast Iowa that has been devastated by their disappearance. Police are also keeping a closer watch on Lyric's father, who has stopped cooperating with police.