UPDATE|Police: Pa. student flashed 2 knifes, injured 20

MURRYSVILLE, Pa. (AP) - A police chief says a 16-year-old boy "was flashing two knives around" when he injured 19 students and a school police officer who eventually subdued him with the help of an assistant principal at a high school near Pittsburgh. Murrysville police Chief Thomas Seefeld says the bloody crime scene left behind today at Franklin Regional High School is "vast" and may take a couple of days to process.