Adam Lanza Shot Victims at Close Range with Semi-Automatic Rifle 15 Dec 2012 Adam Lanza used a Bushmaster .223 semi-automatic rifle at close range to kill children and adults at Sandy Hook Elementary School in Newtown, Connecticut on Friday. "I believe everybody was hit more than once," said Dr. H. Wayne Carver, the state of Connecticut's Chief Medical Examiner. He said the bullets were uniquely damaging and that Lanza's victims died almost immediately."The bullets are designed in such a fashion the energy is deposited in the tissue so the bullet stays in," Carver said. He described the wounds as a "very devastating set of injuries." Two handguns were also found at the scene, but Carver described the Bushmaster as the killer's primary weapon. A fourth weapon was found nearby.