It was there at the point where I copy/pasted the first three paragraphs. The article says it was "UPDATED: 12:50 am CDT ", and probably then is when the reference was deleted. Part of the value of FR is the preservation of original articles from "historical revision".
The arrested people are evidently Black and also Muslim, but evidently the news media do not currently want to say anything about their being "Black Muslims", as in "Nation of Islam"
I think the "Black Muslim" term is confusing, because there are actually several groups that think of themselves, or at any rate are referred to, as "Black Muslims," and Mohammed X's group (the original Black Muslims, NOI) is only one of them. There are all sorts of little splinter groups of prison-formed black males who follow a kind of Islam, adopt a particular style of dress that they believe to be "Islamic," etc. who are not part of the "official" NOI.
There used to be a bizarre group I would see on the streets that actually declared they were the lost tribe of Israel, which had of course, now turned up again as Muslims. They dressed in truly bizarre costumes that even central wardrobe of a Cecil B. DeMille movie would have rejected. They would have been funny, except for their preaching that all Jews and whites should be put to the sword. The hatred was less than funny.