A student authorities say killed seven people at his Minnesota high school first shot his grandfather and the man's girlfriend before taking his police-issued weapon, bulletproof vest and squad car to Red Lake Senior High School. FBI Special Agent in Charge Michael Tabman said Tuesday that 16-year-old Jeff Weise killed his grandfather, 58-year-old Daryl Lussier, and his grandfather's 32-year-old girlfriend, Michelle Sigana, with a .22-caliber gun before driving to the school Monday. FBI agents would not confirm reports that Weise had posted comments on a neo-Nazi Web site. But a person who posted on the site of the Libertarian National...