I think Fox is doing a good job giving both motives. However, the AP is the source of many of the articles today.
**A factoid I found interesting (from the Copts.net site) "Christians often tattoo the cross on their children's wrists. Should parents meet an early death, many courts insist on an Islamic education for their children. But the sign of the cross gives Christian orphanages a basis for requesting that they be allowed to care for the child."
I don't know if I read it or Fox News reported it, but the one girl had that cross tattooed on her wrist and who ever killed them, had put a knife wound right through that cross. More reason for suspicion.
If it was one of our own, they wouldn't have been so bitter over that cross. This is just another reason to lean toward the Muslim Fanatic as the perps.