New documents just released in the Sandy Hook school shooting show that investigators found some pretty disturbing things in the shooter's home, which he shared with his mother.
One of those discoveries was a holiday card containing a check made out to Adam Lanza "for the purchase of a C183 (firearm), authored by (his mother) Nancy Lanza," according to a search warrant.
Investigators also found a gun safe in Adam Lanza's bedroom and more than 1,400 rounds of ammunition in the home.
On December 14, 2012, the 20-year-old took guns belonging to his mother and shot her in her forehead in her bed. He then went to the elementary school in Newtown, Connecticut, where he gunned down 20 children and six staff members before killing himself. We still don't know the motive behind the mass shooting.
Relatives of the victims were briefed of these findings before the documents were made public by state prosecutors. Police say their investigation is still ongoing. They expect it to be completed by June.
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