The Hartford Courant 
November 26, 2013
Adam Lanza acted alone in planning and carrying out the massacre of 20 first-graders and six adults at Sandy Hook Elementary School last December, but an 11-month investigation could not determine a motive in the second-deadliest mass shooting in U.S. history.
Danbury State’s Attorney Stephen J. Sedensky III closed the investigation Monday by announcing there would be no criminal charges filed in the case and releasing a 44-page report that portrayed Lanza as an isolated, socially inept 20-year-old with a fascination for a dance video game and mass killers that seems to have been developed as far back as the fifth grade.
Sedensky also released a detailed timeline of the events on the morning of Dec. 14 that shows Newtown police officers were outside the school for more than five minutes before entering. He concluded that police believed there might have been more than one shooter and “acted accordingly.”
The report indicates the first arriving officers parked away from the school and waited to approach, confirming a recent Courant account. The report states that Lanza likely killed himself within a minute of the first officer arriving at the scene.