According to NBC,
The gunman in the shooting at Sandy Hook Elementary School in Newtown has been identified as Adam Lanza. He is also dead, officials said. A senior law enforcement official tells NBC New York that an unidentified woman has also been found dead, shot in the face, at a Newtown home, bringing the death toll to 28.
State police said the shooting was confined to two rooms at the school, and that the casualties included 20 children and six adults. Two guns were recovered inside the school, the state official said.
"Our hearts are broken today," President Obama said at the White House, choking up as he described how the slain children "had their entire lives ahead of them."
Check the video of Obama sending his condelences to the familys involved.