If confirmed, it would be one of the worst mass shootings in U.S. history. It comes after a series of shooting rampages in the United States this year that have killed multiple victims.
The principal and school psychologist were among the dead, CNN said.
The shooter, an adult, was dead and two handguns were recovered from the scene, NBC News reported without citing a source.
There were unconfirmed reports of a second shooter after witnesses reported hearing dozens of shots, CBS reported.
Sandy Hook Elementary School teaches children from kindergarten through fourth grade – roughly ages 5 to 10.
“It was horrendous,” said parent Brenda Lebinski, who rushed to the school where her daughter is in the third grade. “Everyone was in hysterics – parents, students. There were kids coming out of the school bloodied. I don’t know if they were shot, but they were bloodied.”
Television images showed police and ambulances at the scene, and parents rushing toward the school. Parents were seen reuniting with their children and taking them home.
“This is going to be bad,” a state official told Reuters, requesting anonymity because the scope of the tragedy remained uncertain.
h/t Reuters
