NEWTOWN, Conn. (AP) — A man opened fire Friday inside two classrooms at the Connecticut elementary school where his mother was a teacher, killing 26 people, including 20 children, as youngsters cowered in corners and closets and trembled helplessly to gunshots reverberating through the building. The killer, carrying two handguns, committed suicide at the school, and another person was found dead at a second scene, bringing the toll to 28, authorities said. Police shed no light on the motive for the attack.