Conn. police release final report on Newtown school shooting

Updated 5:06 PM EST, Sun December 29, 2013

Story highlights

Gunman Adam Lanza killed himself and 27 others in December 2012

Connecticut State Police report on shootings is thousands of pages long

Report discusses Lanza's school work and his relationship with his parents

(CNN) —  

A final report released Friday on the investigation of the mass shooting at Connecticut’s Sandy Hook Elementary School offered snippets of the life of the reclusive and tormented young man who carried out the second deadliest mass shooting in U.S. history.

More than anything, the voluminous report – thousands of pages long – from the Connecticut State Police closes the final chapter on a massacre that triggered a national debate over gun violence, school safety and mental health.

In a heavily redacted page in the report, an unidentified witness told investigators 20-year-old gunman Adam Lanza hated his mother, Nancy, and Sandy Hook Elementary School. She volunteered at the school from 1998 to 2012, including years when he attended it.

“Lanza apparently felt that his mother loved the students more than him,” the report said.

However, a prosecutor’s report released last month concluded that Lanza acted alone and took the motive for the bloodbath to his grave.