Ark. teen to be charged as adult in sister's death (AP) - A 15-year-old western Arkansas boy who told police he shot and killed his 16-year-old sister will be charged as an adult with murder, a prosecutor said Tuesday. Prosecutor David Gibbons told The Associated Press that he decided to charge the boy as an adult "because of the nature of the crime." Authorities have not released the name of the boy who faces an initial court appearance Tuesday afternoon in Russellville, Gibbons said. The prosecutor said the teenager does not yet have an attorney. Franklin County Sheriff Anthony Boen said the boy told police Sunday morning that he had shot and killed his sister at their home near Ozark. Boen said the boy appeared remorseful and had tears in his eyes when he turned himself in. "He just said that he had just shot and killed his sister," Boen said. The boy presented himself to the sheriff's department about 90 minutes later.