Opening statements began on Monday after a week of jury selection. Over the next few weeks, witnesses, experts, investigators and possibly even some celebrity witnesses are slated to give evidence about what occurred that night.

Prosecutors allege that Davis acquired a gun and organised two vehicles to travel to a Las Vegas club, one of them a white Cadillac, which carried three other men, including his nephew, Anderson.

Palal told the jury they the men decided to "get some booze and go back to the Vegas strip and party", prosecutors said. On their journey, however, they saw a caravan of cars - and spotted Shakur and Death Row Records co-founder Marion "Suge" Knight in one of the vehicles.

Palal alleges that's when Davis and the others in the Cadillac decided to make a U-turn and confront Shakur and Knight. Davis, who was in the passenger seat, he said, passed a gun to Anderson, who shot into Shakur's car.

Ingrid Stokes, who was present at the time of the shooting, testified that she and her friends were driving around Las Vegas that night, before they ran into Knight and Shakur.

Her friend knew Knight, and he suggested the women follow them to a club, Stokes said. They started to drive through Vegas, but "there was a car behind us, trying to get in front of us," Stokes recounted.

At one point, they stopped at a light and pulled over to switch drivers due to concerns about the other vehicle.

"We were head down, taking our seat belts off, when we heard the gunshots," Stokes testified. "All hell broke loose."