Tupac trial spotlights decades of US police failures in solving the case

Police received information nearly immediately after the killing. It took Las Vegas police 27 years to make an arrest

For years, US law enforcement officials blamed their failure to solve hip-hop star Tupac Shakur's murder on the lack of cooperation from key witnesses, and on gang members' snitches get stitches" culture.

But testimony in a much-delayed murder trial, which concluded this week, almost 30 years after Shakur's death, highlighted just how much law enforcement officials knew about the shooting, and how early.