Twenty-four people were reportedly injured at around 7:15 a.m. on Wednesday at a Pittsburgh-area high school during a knife attack. Some 21 students and a security guard were stabbed, and another two students were injured in the aftermath of the attack at Franklin Regional High School. The police announced Wednesday evening that they are charging 16-year-old sophomore Alex Hribal as an adult. He will face four counts of attempted homicide and 21 counts of aggravated assault. One person remains in critical condition.