Re: The Qarmations: Killing Hajjis and stealing the Black Stone from the Kaaba
This one is complex. Both Bohris and Agha Khani beliefs are descended from the form of Ismailism that the Fatimids followed. Like the Sunni/Shia split, Bohris and Aga Khanis separated for political reasons, and religious differences followed.
When the Fatimid Caliph died in 1094, his Grand Vizier, a Sunni, declared that the Caliph’s younger son was the new Caliph, not the older son, in defiance of Ismaili tradition.
Bohri beliefs stem from those who accepted the younger son as Caliph. Agha Khani beliefs stem from those who tried to fight for the right of the elder son, were defeated, and left Egypt into exile.