Armed with an SIG Sauer 9mm pistol, a shotgun, and a knife,[9] the assailant fatally shot a father and son outside the nursery building.[2] He proceeded to attack four or five staff members, three of whom died.[10] Among them was a teacher who was eight months pregnant.[11] Several staff members fled the scene.[7] He then entered a room where children were asleep and attacked them with the knife.