>> the shooter supposedly shot some students. and i was just in class and i heard a popping noise almost a balloon popping when you have too much air. i knew something wasn't right. and so i get down, and she went to see what was going on. she opened the door and unfortunately the gunman shot her. and i don't know ooze of right now what the situation is right now, but we locked the doors, turned off the lights and just -- we were all pretty much in panic mode right there. we called 911 and called our parents, off loved ones. >> live now to sarah sidener. we know the entire apartment block is being sealed off.