I can't confirm it, but one of the news shows said they were American black muslims.
They are, much to the chagrin of the AP, the liberal media, and so far even, (astonishingly enough) FOX which only will say that they are "Americans".
If they are muslims, somebody ought to take to task the news organizations that denied muslims were involved early on. This politically correct "it's a white guy in a white van reporting needs to end". It's as bad as Rather's "fake but accurate". This is "fake but religiously sensitive"
"Black Muslims" confirmed by MSNBC, see my post 30