Twenty-seven people are dead, including 20 children, at Sandy Hook Elementary School in Newtown, Connecticut, officials say. The children were aged 5 to 10 years old.
Witnesses tell local news outlets they believe the school's principal and psychologist are among the dead. The suspected gunman also died. CNN reports two handguns and a Bushmaster .223 semi-automatic weapon were found at the scene.
The shooter was initially identified as Ryan Lanza. New reports from the AP and the New York Post indicate the gunman was actually Adam Lanza, the 20-year-old son of Newtown's Nancy Lanza, who was found dead at her home, taking the tragedy's toll to 28.
24-year-old Ryan Lanza, of Hoboken, NJ, was questioned by police on Friday. NBC News reports the confusion may have stemmed from the shooter having his brother's ID on him.
There are 626 students at the K-4 school in Newtown.
According to the Hartford Courant, a shooter was in the school's main office around 9:41 a.m., when the first 911 call came in. The shooting may have begun during an administrative meeting and spread to a kindergarten classroom and the hallway.
At a press conference, Connecticut State Police Lt. Paul Vance said the shooting happened across two rooms in one section of the school.
Danbury Hospital received three patients from the scene. The hospital is now on lockdown.
Early on, local news outlets reported tragic sights from the scene: