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, one-time leader of the South Side Compton Crips, ordered the killing and provided the gun used to kill Shakur in a drive-by shooting.

The trial began Monday with jury selection, a process expected to last through the week.

Davis, 63, appeared in court wearing a light-blue shirt and blue tie. He faces life in prison without parole if convicted.