LOS ANGELES, United States (AFP)—The trial of a former gang leader accused of orchestrating the murder of rapper Tupac Shakur finally began on Monday, 30 years after one of America’s most high-profile unresolved killings.

The proceedings, expected to last a month, will likely not make clear who fired the shots that killed the California hip-hop legend on the night of September 7, 1996, while he was in Las Vegas to see a Mike Tyson boxing match.

But prosecutors aim to show that the defendant, Duane “Keffe D” Davis, onetime leader of the South Side Compton Crips, ordered the killing and provided the gun used to kill Shakur in a drive-by shooting.