Twenty-seven people, including 20 children, were killed when a gunman clad in black military gear opened fire inside his mother’s kindergarten class at a Connecticut elementary school. The shooter, who sources identified as Adam Lanza, 20, shot his mother, Nancy Lanza, in the face at their home in Newtown, Conn., then went to nearby Sandy Hook Elementary School where she taught and gunned down her entire class, according to sources. Lanza was found dead inside the school, according to officials. Eighteen of the children and six more adults were dead at the school and two more children died later, according to Connecticut State Police Lt. Paul Vance. An official with knowledge of the situation said the shooter was armed with a .223-caliber rifle. Four weapons in total were recovered from the scene. The motive is not yet known.