Elizabeth Roundy says her son, Allen Larand Fischer, 13, and her daughter, Rachelle Leray Fischer, 15, disappeared Sunday ...

Allen Larand Fischer, 13, and Rachelle Leray Fischer, 15, were reported missing from their home in Monteview, a small ...

The Fundamentalist Church of Jesus Christ of Latter-day Saints is a polygamist sect run by Warren Jeffs, the self-proclaimed ...

Law enforcement in Idaho issued an Amber Alert after teenagers Allen Larand Fischer and Rachelle Leray Fischer went missing.

Allen Larand Fischer, 13, and Rachelle Leray Fischer, 15, were reported missing from their home in Monteview, a small community in Jefferson County.

Allen Larand Fischer, 13, and Rachelle Leray Fischer, 15, were reported missing from their home in Monteview, a small community in Jefferson County.

Allen Larand Fischer, 13, and Rachelle Leray Fischer, 15, were reported missing from their home in Monteview, a small community in Jefferson County.

Allen Larand Fischer, 13, and Rachelle Leray Fischer, 15, were reported missing from their home in Monteview, a small community in Jefferson County.

Allen Larand Fischer, 13, and Rachelle Leray Fischer, 15, were reported missing from their home in Monteview, a small community in Jefferson County.

Two Idaho teens vanished Sunday, and their mother believes they were taken by extremist group following a chilling prophecy from imprisoned cult leader Warren Jeffs.

Allen Larand Fischer, 13, and Rachelle Leray Fischer, 15, were reported missing from their home in Monteview, a small community in Jefferson County.