This December 2012 photo released by the Connecticut State Police on Friday, Dec. 27, 2013, shows a shattered window at Sandy Hook Elementary School in Newtown, Conn. Adam Lanza gunned down 20 first-graders and six educators with a semi-automatic rifle at the school on Dec. 14, 2012, after killing his mother inside their home. Lanza committed suicide with a handgun as police arrived at the school.
Credit AP Photo/Connecticut State Police
The father of the gunman in the Sandy Hook Elementary School mass shooting has agreed to help a state commission obtain his son's school and medical records. The Sandy Hook Advisory Commission's chairman announced this on Friday.