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.