LAS VEGAS (AP) - A device left in a casino parking garage exploded early Monday, killing a hotel employee who picked it up, authorities said. The man was removing the device from atop a car when it exploded shortly after 4 a.m. on the second floor of a parking behind the Luxor hotel-casino, said Officer Bill Cassell, a police spokesman. He declined to describe the device, but said initial reports that it was a backpack were wrong. Police said the blast was not a terrorist act but an apparent murder of a Luxor employee. No threat had been made against...