All of the children killed by the gunman were shot multiple times, according to the state’s chief medical examiner, who said that it was worst scene he had witnessed in three decades examining crime scenes.

Dr. Carver said that parents were shown photos of their children to spare them from seeing the gruesome results of the shooting rampage, which left 20 children dead, along with six adults at the school. The gunman, identified by law enforcement officials as Adam Lanza, took his own life and also shot and killed his mother at his home before going to the school. Dr. Carver said that they had not yet completed examinations of Mr. Lanza and his mother.

Dr. Carver said that in the seven autopsies he himself had performed, the victims had from 3 to 11 wounds.