In this Sept. 23, 1955, file photo, J.W. Milam, left, his wife, second left, Roy Bryant, far right, and his wife, Carolyn Bryant, sit together in a courtroom in Sumner, Miss. Bryant and his half-brother Milam were charged with murder but acquitted in the kidnap-torture slaying of 14-year-old black teen Emmett Till in 1955 after he allegedly whistled at Carolyn Bryant. The men later confessed in a magazine interview but weren’t retried; both are now dead. Citing “new information,” the U.S. Justice Department has reopened the investigation into Till’s death. (AP Photo, File)
In this 1955 file photo, Carolyn Bryant poses for a photo. A Justice Department report to Congress says the agency is reinvestigating the 1955 slaying of Emmett Till, a black teenager whose brutal killing in Mississippi after receiving what it calls “new information.” The report doesn’t say what any potential new evidence might be. But it follows the publication of a book which included passages where Donham, then known as Carolyn Bryant and a potential witness at the time, acknowledged lying. (AP Photo/Gene Herrick, File)
This undated photo shows Emmett Louis Till, a 14-year-old black Chicago boy, who was kidnapped, tortured and murdered in 1955 after he allegedly whistled at a white woman in Mississippi. The federal government has reopened its investigation into the slaying of Till, the black teenager whose brutal killing in Mississippi helped inspire the civil rights movement more than 60 years ago. (AP Photo, File)
BIRMINGHAM, Ala. — A renewed investigation into the brutal slaying of Emmett Till was prompted by a 2017 book that revealed lies by a key figure in the 1955 case that helped build momentum for the civil rights movement, a federal official said Thursday.