20 Children Died in School Massacre Twenty children died today when a heavily armed man invaded a Newtown, Conn., elementary school, killing his mother and spraying the school with bullets. The gunman was killed inside of the school. Lt. Paul Vance said 18 children died in the school and two more died later in a hospital. Six adults were also slain, bringing the total to 26. In addition to the casualties at the school, a dead body was also found in the shooter's home, officials said. Federal sources initially identified the suspect as Ryan Lanza, 24, of New Jersey, but there appears to be confusion over the gunman's identity. Sources said the shooter was armed with a Glock semi automatic handgun and a Sig Sauer semi automatic handgun, law enforcement sources told ABC News. Additionally, .223 caliber shell casings--a rifle caliber--were also found at the scene. He was wearing a bullet-proof vest when he opened fire in the elementary school. Among the dead in the school was the gunman's mother, who was a kindergarten teacher, sources told ABC News. Many of the students slain were in class with her when she was killed. First grade teacher Kaitlin Roig, 29, locked her 14 students in a class bathroom and listened to "tons of shooting" until police came to help. "It was horrific," Roig said. I thought we were going to die. She said that the terrified kids were saying, "I just want Christmasâ¦I don't want to die. I just want to have Christmas. A tearful President Obama said there's "not a parent in America who doesn't feel the overwhelming grief that I do." The president had to pause to compose himself after saying these were "beautiful little kids between the ages of 5 and 10." As he continued with his statement, Obama wiped away tears from each eye. He has ordered flags flown as half staff. The alert at the school ended when Vance announced, "The shooter is deceased inside the building. Authorities initially believed that there were two gunmen and were searching cars around the school, but authorities do not appear to be looking for another gunman. Lt. Paul Vance said that on-duty and off-duty officers swarmed to the school and quickly checked "every door, every crack, every crevice" in the building looking for the gunman and evacuating children.