Tulsa Race Massacre investigators say they've sequenced DNA from 6 possible victims

A mural marking Black Wall Street, also called the Greenwood District, in Tulsa, Okla. The Tulsa Race Massacre in 1921 devastated Black Wall Street and claimed some 300 African American lives. (Win McNamee/Getty Images)

A team of researchers hoping to identify victims of the 1921 Tulsa Race Massacre said Wednesday they had completed DNA sequencing of six sets of human remains exhumed from the city's Oaklawn Cemetery, where bodies of Black residents killed in the violence are thought to have been buried.

Speaking at a news conference in Tulsa, Mayor G.T. Bynum announced what he described as a "major scientific breakthrough."