BOISE, Idaho (AP) — The bodies of two children uncovered in rural Idaho are a boy and his big sister who have been missing since September, relatives said Wednesday, bringing a grim end to a search that captivated people worldwide but no fewer questions about a case that has put their mother and her husband behind bars.

Authorities have not released the identities of the bodies discovered on the property of Chad Daybell, who married the children's mother, Lori Vallow Daybell, a few weeks after the kids were last seen.

But Joshua "JJ" Vallow's grandfather Larry Woodcock told the Post Register i...