In pictures: Sandy Hook Elementary School shooting

People are comforted near Sandy Hook Elementary School in Newtown, Connecticut where a man killed his mother at home and then opened fire inside the elementary school where she taught, massacring 26 people, including 20 children. Alex von Kleydorff / AP Photo

A police officer leads two women and a child from Sandy Hook Elementary School. Shannon Hicks / AP Photo/Newtown Bee.

The latest attack comes less than two weeks before Christmas. It appeared to be the nation's second-deadliest school shooting, exceeded only by the Virginia Tech massacre in 2007. Alex von Kleydorff / AP

A woman weeps as she arrives to pick up her children. AP

A candlelight vigil in Times Square, for the victims. Carlo Allegri / Reuters

The families of victims grieve. Adrees Latif / Reuters

The latest attack comes less than two weeks before Christmas. It appeared to be the nation's second-deadliest school shooting, exceeded only by the Virginia Tech massacre in 2007. Andrew Gombert / AP

A woman waits to hear about her sister, a teacher. Jessica Hill / AP