A grand jury in Mississippi has declined to indict the white woman whose accusation set off the lynching of black teenager Emmett Till nearly 70 years ago, despite revelations about an unserved arrest warrant and a newly revealed memoir by the woman, a prosecutor said Tuesday. A Leflore County grand jury considered evidence and testimony regarding Carolyn Bryant Donham’s involvement in the kidnapping and death of Till, Leflore County District Attorney Dewayne Richardson said in a news release.