The FBI has released three lengthy documents on its investigation into the mass shooting at Sandy Hook Elementary School.
The documents, each containing more than 500-plus pages, were posted to the FBI's vault website on Tuesday.
"In general, the FBI does not comment on the content of the files released through [Freedom of Information Act], and lets the information contained in the files speak for itself," said Charles Grady, a community outreach specialist for the FBI based in New Haven. "This is a routine FOIA release nothing more, nothing less."
Names, addresses and contact information have been redacted throughout the documents, many of which included interviews with neighbors and those connected to the shooter, Adam Lanza.
One person told an agent that Lanza's mother was concerned about him because he had become a "shut in" and had not gone anywhere in three months. The concern was noted by the person about a month before the shooting.
Lanza killed his mother before heading to the Newtown school on Dec. 14, 2012.
Investigators said Lanza then killed 26 students and staff before turning a gun on himself.
Documents mentioned Lanza had Asperger’s syndrome, which is a form of autism, and was in special classes at Sandy Hook and had been taking college classes but never went full time.
His mother Nancy would drive him to school, as she told someone Adam didn't want a driver's license.
Witnesses mentioned Nancy was private about him and told them he didn't like school because he thought the kids were immature.
Lanza eventually shut himself in his bedroom, playing video games all day.
The investigation lead to numerous witnesses.
An out-of-state witness told police back in December of 2008, Lanza had mentioned being interested in assault weapons and says Lanza told him he would kill his mother and children at Sandy Hook.
After this conversation happened, according to the paperwork, the witness called Newtown police.
He says police told him that "Lanza's mother owned the guns and that there was nothing Newtown police could do about it."
The most disturbing of witnesses happened five days after the shooting.
A man told police he may have met Lanza in 2010 or 2011 and said Lanza told him "the most evil thing in the world would be to conduct a slaughter at an elementary school."
He believed when he saw Lanza's picture on the news after the shooting, that it was him but he wasn't certain.
A month after the shooting, the FBI interviewed another witness who mentioned she talked with Lanza on a suicide forum website that supports people who want to harm themselves.
She says Lanza told her "he wanted to kill himself and that it would be on the news."
More paperwork shows another witness telling the FBI she became aware of Lanza through a posting on a website about the Columbine massacre.
She said she knew Lanza was working on a list or spreadsheet, documenting details of hundreds of spree killings and mass murders.
She talked with Lanza through emails but didn't know his last name or where he lived.
She said " Lanza never threatened to harm anyone and never wrote that he had guns or weapons in his home. His postings revealed he had extensive knowledge of the guns and ammunition that had been used in historical mass murders.”
Police asked her why she thinks he did it and she said he mentioned parents and adults were controlling forces. And "she would guess that Lanza would have thought he was saving them or protecting them. Lanza believed he was taking them away from harmful influences."
All witnesses are being kept confidential.
The family owned at least four guns, and all weapons were legally purchased by Nancy. The guns were kept in a bedroom safe.
Also in the documents, hacking into a government computer system. Nancy Lanza told friends Adam hacked into two levels of the system before the screen went black.
He tried to breach a third level when he was in the 9th grade but failed.
The FBI showed up at the Lanza home.
Nancy had to convince authorities that "her son was just very intelligent and was challenging himself to see if he could hack into a government system."
Regarding that hack, nothing ever came out of it.
Also, in the days following the shooting, a number of Newtown residents reported receiving death threats from someone identifying themselves as "Adam Lanza."
Some of the items taken from Lanza’s Newtown home were PlayStations, a laptop, Xbox, video game parts, and memory cards.
Oddly enough, a second cell phone and a USB device were found under a bathroom sink on the second floor of the home.
A hard drive was also found in that bathroom but on a closet shelf.
Police took seven journals written by Lanza that were found in the attic.
On the day of the shooting, it was unknown right away that Lanza had killed his mother Nancy before heading to the school.
Agents took the home telephone and answering system.
On it there were 41 phone calls and another 39 voice messages left on the home phone.
Some people saying "I saw the headlines,” "I’m checking in,” and "I’m sorry for what you're going through."
Other messages weren't so nice.
After all those documents, there still isn't a clear motive. This case is still open.
To read through the reports, click on the three links below: FBI releases Sandy Hook investigation documents, part 1 FBI releases Sandy Hook investigation documents, part 2 FBI releases Sandy Hook investigation documents, part 3The FBI Records Vault Twitter handle posted the release of the documents around 10 a.m. on Tuesday.
For more on the state police investigation, which was released four years ago, readhere
For previously released evidence photos, click here.
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