LAS VEGAS, United States (AFP) — Rapper Tupac Shakur was shot dead in an act of gang revenge ordered by a mobster who later boasted of it, jurors heard Monday, as one of America’s most anticipated trials got underway, 30 years after the murder.

Duane “Keffe D” Davis, a one-time leader of the South Side Compton Crips, one of a patchwork of gangs that ran parts of Los Angeles in the 1990s, ordered the killing after his nephew had been beaten by a rival mob, prosecutor Binu Pilal told a Las Vegas court.

“On September 7, 1996, Tupac Shakur publicly, on camera, participated in a humiliating beating of Duane Davis’s nephew, Orlando Anderson,” he said.