State Police Lt. Paul Vance said 18 children and 6 adults were pronounced dead at that scene. Two other children later died at the hospital.
Among those dead is the gunman, identified as 24-year-old Ryan Lanza, CBS News reported. He was found dead inside the building from an apparent self-inflicted gunshot wound, sources told CBS 2.
The shooting has become the second-deadliest school shooting in the nation’s history, exceeded only by the 2007 massacre at Virginia Tech.
A 28th victim, an adult male, was found dead at a secondary crime scene, Lance said. He would not elaborate on the details.