hypothetical question... if you were Satan and you had deceived your followers into making a “holy” pilgrimage to worship a chunk of meteroite found in the middle of the desert, wouldn’t you find it nearly irresistible not to kill off a bunch of them every so often just for the entertainment value of it?
https://en.wikipedia.org/wiki/Incidents_during_the_Hajj
^^^ there is the answer.
Or Satan wanted some more servants around.