Las Vegas police served a search warrant at a Henderson home as part of an investigation into the killing of the popular rapper Tupac Shakur near the Strip in 1996, authorities said Tuesday.

“The search warrant that we conducted is in connection with the Tupac Shakur case,” Metropolitan Police Department Lt. Jason Johansson said of Monday’s search.

“It has been a while” since the deadly September 1996 shooting, Johansson said. “It’s a case that’s gone unsolved and hopefully one day we can change that.”

Johansson declined to release further details.

The rapper was critically wounded in a shooting on Sept. 7, 1996, at the intersection of Flamingo Road and Koval Lane. He died of his injuries at University Medical Center on Sept. 13, 1996.