An Oklahoma City woman came forward Wednesday claiming to be the niece of infamous airline hijacker D.B. Cooper—the man who bailed out of a plane with $200,000 in ransom, thought to be the only unsolved hijacking in the FBI’s history. Marla Wynn Cooper, 48, said she was the one who gave the FBI new clues that have sparked renewed interest in the case, and said she remembers her uncle plotting the hijacking at a family event in 1971. While the FBI said a person close to the suspect has come forward, it declined to comment on who that person is. Marla Cooper said she is certain her uncle Lynn Doyle Cooper, who went by the name L.D. Cooper, seized the Seattle-bound Northwest Orient Airlines flight in November 1971 claiming to have a bomb and then vanished.