Did a religious fanatic kill his teenage daughters?

I have a friend who calls the fundamentalist Muslims "religious fanatics". That is how he described the people who President Carter and his buddy Zbigniew Brzezinski helped to bring to power in Iran. They all don't need to be Shia, but could be Sunni, as well. A father, who was a cab driver, apparently killed his two teenage daughters, here in the Dallas area. We can imagine that perhaps his daughters were Americanized and he didn't like it. His reaction was to kill them, apparently.