No drugs, alcohol in driver in Tennessee school bus crash; death toll hits six

Johnthony Walker, 24, was driving the bus full of students home from Chattanooga's Woodmore Elementary School on Monday when it veered off a road, flipped on its side and smashed into a tree and telephone poll, according to a police affidavit. Officials said five children were killed initially: a kindergartner, a first-grader and three fourth-grade students. Walker has been charged with five counts of vehicular homicide, reckless endangerment and reckless driving.