Fifty-three-year-old Thomas Stevens Sanders entered the plea Friday. He is accused of kidnapping and killing Lexis Roberts. If convicted of either charge, who could face the death penalty.
He is accused of bringing Lexis from Arizona to Louisiana and shooting her with a .22-caliber rifle.
Lexis and her mother, 31-year-old Suellen Roberts, reportedly traveled with Sanders over the Labor Day weekend. Sanders is also suspected in the death of Suellen Roberts.
Sanders was declared legally dead in Mississippi in 1994.