Adam Lanza appears in this undated middle school photo
(CBS NEWS) -- A Connecticut official said the mother of the gunman in the
Connecticut massacre was shot four times in the head before her son went
to the elementary school where he gunned down 26 people.
Lanza then killed himself with a single bullet to the head from a 10 mm
gun, and the bullet was recovered in a classroom wall.
enforcement officers in Newtown, Conn. only had one brief contact with
Lanza while the 20-year-old mass murderer was still alive.
News' John Miller reports, officers responding to the emergency calls
from Sandy Hook Elementary School had fleeting glimpses of the
black-clad gunman as he prowled the halls of the school.
Here are the final moments of Lanza's life, as recounted by CBS News' Miller:
first police officer on the scene was confronted by the glass window
that Lanza had shot his way through to get past the locked door. The
officer advanced into the school and saw the gunman, from a great
distance down a long hallway, perhaps a couple of hundred feet. The
gunman, dressed all in black, spotted the officer and ducked into a room
off the hallway. As the officer, now joined by a partner began to rush
down the hall toward the gunman they heard a volley of shots. When they
got there, they found the gunman, dead from a self-inflicted gunshot
wound. Just beyond the gunman, in a classroom, children huddled
together, and their teacher, all of them shot multiple times. Nearby, in
a bathroom another group of children, huddled together, all shot
multiple times. It appears that the gunman let go a last volley of shots
at his victims before killing himself with a single bullet to the
In the chaos that followed one of the worst mass
shootings in U.S. history, a profile has haltingly emerged of an
isolated, home-schooled youth who had very little of the
Facebook/Twitter/text message presence favored today's young people.
It's as notable for what is not known about Adam Lanza in an era of
"In this age of living out loud, the electronic footprint ... we
found scant evidence that he had a profile online," said Miller, a
former assistant director for the FBI. "The story is growing that he was
a young man onto himself."
Reporting by Miller, "48 Hours"
correspondent Troy Roberts, and other CBS News correspondents paints a
picture of a shy, awkward kid who was also described as "brilliant" and
"He really was a computer geek,'' said Lanza's aunt, Marsha Lanza of Chicago. "He was a very bright boy."
Lanza said Adam's mother, Nancy Lanza, had disputes with the local
school district and eventually ended up home schooling Adam. She could
not confirm reports that Adam Lanza had Asperger syndrome or any other
learning disability. Sources tell CBS News that Adam Lanza did attend
Sandy Hook Elementary School at one time, although it's currently
unclear when and for how long.
"[Nancy] had issues with school
... She battled with the school district,'' said Marsha Lanza. "I'm not
100 percent certain if it was behavior, learning disabilities, I really
don't know. But he was very, very bright. He was smart."
Lanza was found dead in the Newtown, Conn., home she shared with her
younger son. Police believe Adam Lanza killed his mother, and then
collected guns registered to her in their home to use in his rampage at
the elementary school.
A law enforcement source said that in addition to four weapons
connected to the mass shooting -- three on Adam's person, and one in his
car -- there were two other weapons found in his mother's home. Police
are tracing all six weapons as to where and when purchased and
registration, reports CBS News investigative producer Pat Milton.
Two law enforcement sources tell CBS News' Milton that Nancy Lanza was found shot to death in her bed.
CBS News' Bob Orr reported Sunday morning on "Face The Nation" that
police found two smashed computers in the home. Law enforcement
authorities have collected the computer pieces to see what information
might be retrieved.
Neighbors told CBS News that Nancy Lanza was a gun enthusiast and often took Adam Lanza target shooting with her.
The aunt said Nancy Lanza kept guns for own safety, and had something
of a survivalist mentality; she was worried about protecting her home
if the economy went south.
Money was not an issue for the family; Nancy Lanza received a healthy support payment from her ex-husband, Peter Lanza.
"She didn't have to work. My brother-in-law left her well off," said Marsha Lanza.
friend of Nancy Lanza, local landscaper Dan Holmes, said he believed
that Adam's father was not a large presence in Adam's life. Nancy Lanza
evidently still suffered from a bad divorce and could be "pretty vocal"
about her ex.
"I don't believe the kids saw their father at all,"
said Holmes. "She was pretty vocal about her ex-husband ... years
CBS News' Pat Milton reports source briefed on the investigation said
Nancy Lanza was demanding of her children. Even though Adam was highly
intelligent, she pressed him to high standards and even pressed her sons
to measure up at the shooting range where she taught them to shoot, the
Young residents of Newtown who knew Adam Lanza described him
as uncomfortable in groups, shy, and that there was "something off
there," reports "48 Hours" correspondent Roberts.
In the chaotic hours after the mass shooting, Adam was initially
confused with his older brother Ryan Lanza, who lives in Hoboken, N.J.
Ryan Lanza was taken in for questioning Friday but later released. It
appears, as of now, that he was not involved in the shooting.
CBS News' Miller notes Adam apparently grew up in the shadow of a more successful older brother.
"He was very different from his older brother, who had gone to college, and gotten a job at a brokerage firm," said Miller.
As CBS News' Miller notes, there's been very little paper trail for the 20-year-old Lanza.
been a mystery. ... He got his GED a few years ago ... but there's no
picture of him holding a job or getting higher education."
On Saturday, Lanza's father Peter issued a statement:
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