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Police release Sandy Hook shooting documents

Police in Connecticut have released thousands of pages of documents from their investigation into the Sandy Hook Elementary School massacre that killed 20 children and six adults.

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Adam Lanza was 'obsessed with Columbine massacre'

A report released on the gunman of the Sandy Hook massacre reveals that Adam Lanza "was undoubtedly afflicted with mental health problems; yet despite a fascination with mass shootings and firearms, he displayed no aggressive or threatening tendencies".

Lanza became obsessed with the 1999 bloodbath at Columbine High in Colorado and other mass killings, the report said. He also kept a spreadsheet ranking mass murders.

A shattered window at Sandy Hook Elementary School in Newtown, Connecticut

The report also said that in 2005, he was diagnosed with Asperger's disorder - an autism-like condition that is not associated with violence - and that he lacked empathy for others and behaved strangely.

Bullet holes can be seen in windows at Sandy Hook Elementary School in Newtown
The car driven by Adam Lanza is pictured at Sandy Hook Elementary School in Newtown

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