NEWTOWN, Conn. (AP) - Connecticut state police say multiple 30-round magazines and hundreds of bullets were found at the elementary school where 26 were killed.
State Police Lt. Paul Vance also said Sunday that authorities have officially identified the gunman in the school rampage as Adam Lanza. They say his mother, Nancy, as was one of his victims.
Residents of Newtown are preparing for a visit by President Barack Obama. He is scheduled to attend an interfaith vigil in the evening.
The shooting is the largest massacre of school-age children in U.S. history.
A medical examiner says all the victims of the Connecticut school shooting were killed up close by multiple rifle shots.
Dr. H. Wayne Carver said at a news conference Saturday the deaths are classified as homicides. He says he believes "everybody was hit more than once."
Photo Gallery: Connecticut School Shooting
Friday's massacre of 26 children and adults at the elementary school has elicited horror and soul-searching around the world.
Investigators are trying to learn more about 20-year-old gunman Adam Lanza. They've questioned his older brother, who's not believed to have been involved in the rampage at Sandy Hook Elementary in prosperous Newtown, 60 miles northeast of New York City.
Hundreds of people in the tight-knit community packed a church Friday in a vigil for the victims, including 20 children. Monsignor Robert Weiss says these were "just beautiful, beautiful children."
Town officials in Connecticut say the principal who died in the rampage at an elementary school was killed while lunging at the gunman as she tried to overtake him.
Dawn Hochsprung was gunned down in Friday's massacre in Newtown. Board of Education chairwoman Debbie Liedlien says administrators were coming out of a meeting when the gunman forced his way into the school and ran toward him.
Jeff Capeci is chairman of the town's Legislative Council. Asked whether Hochsprung is a hero, he says, "From what we know, it's hard to classify her as anything else."
Hochsprung had worked at the school for two years. Both Liedlien and Capeci say she immediately became a beloved figure. Liedlien says "it's so sad to lose somebody like her" and that residents are feeling "a deep sense of loss" over her death.
Peter Lanza, the father of 20-year-old Adam Lanza, who shot to death his mother in their home and then slaughtered 26 people in an elementary school before killing himself, issued the following statement Saturday:
"Our hearts go out to the families and friends who lost loved ones and to all those who were injured. Our family is grieving along with all those who have been affected by this enormous tragedy. No words can truly express how heartbroken we are. We are in a state of disbelief and trying to find whatever answers we can. We too are asking why. We have cooperated fully with law enforcement and will continue to do so. Like so many of you, we are saddened, but struggling to make sense of what has transpired."
Relatives of a Connecticut woman fatally shot by her son before he killed 26 people at a school then killed himself say in a statement that they share the grief of the Newtown community and the nation.
A sheriff in New Hampshire, where Nancy Lanza once lived, read the statement Saturday, saying the family is trying to understand "the tremendous loss." Rockingham County Sheriff Michael Downing said Lanza's brother James Champion, a retired police captain in Kingston, N.H., and other relatives express their "heartfelt sorrow" and "the whole family is traumatized by this event."
Champion would not discuss what might have triggered his nephew to go on the shooting spree.
Nancy Lanza's family described her as kind, loving and considerate. She was once a stockbroker for John Hancock in Boston.
An official says the gunman in the Connecticut school shooting had Asperger's syndrome, but experts say there's no connection between the disorder and violent behavior.
Asperger's is a mild form of autism often characterized by social awkwardness.
A law enforcement official says Adam Lanza had been diagnosed with Asperger's. The official spoke on condition of anonymity because the person was not authorized to discuss the unfolding investigation.
Columbus, Ohio, psychologist Eric Butter says research suggests people with autism have a higher rate of aggressive behavior than the general population. He says this includes outbursts, shoving or angry shouting, but typically does not include planned, intentional violence.
High school classmates say Lanza was bright but painfully shy, anxious and a loner. Butter says those characteristics are consistent with Asperger's.
Copyright 2012 The Associated Press. All rights reserved.