An accused former street gang leader was arrested on Friday on a charge of murder in the Las Vegas shooting death of hip-hop star Tupac Shakur nearly three decades ago, marking a breakthrough for a long-unsolved case that was a defining moment in the history of rap music.

A grand jury in Clark County, Nevada, returned an indictment charging Duane "Keffe D" Davis with one count of murder with a deadly weapon for his alleged role in leading a group of men to kill Shakur in a 1996 drive-by shooting near the Las Vegas strip.

Authorities described Davis as the "shot caller" of a hurried plot to avenge the beating of his nephew, Orlando Anderson, inside the MGM Grand Garden Arena by members of Shakur's entourage on the night of Sept. 7, 1996, not long before the shooting.