LAS VEGAS (KLAS) — Las Vegas Metro police searched a home Monday as part of the ongoing investigation into the death of Tupac Shakur, police confirmed to the 8 News Now Investigators.

Shakur, 25, was shot and killed one block off the Las Vegas Strip in September 1996. His murder remains unsolved.

The warrant, approved by a judge, reportedly involved Duane Davis, 60, who is also known as “Keffe D,” sources said.

Detectives served the search warrant at a home in Henderson near Interstate 11 and Wagon Wheel Drive on Monday, sources told the 8 News Now Investigators. It was unclear how Davis was connected to the address.

Police searched the home for personal notes, photos and other documents related to Tupac’s death, a source with knowledge of the investigation said. What police may have taken with them was unknown as of Tuesday.

People at the home declined to comment Tuesday. A person first told a reporter and photographer that they were at the wrong address, but later threatened them that “things would escalate” if they did not leave the public road.

Metro police did not comment further. No arrest had been made as of Tuesday.

On Sept. 7, 1996, Shakur was shot at the intersection of Flamingo Road and Koval Lane while leaving a Mike Tyson fight at the MGM Grand Plaza. He died on Sept. 13, 1996, in the hospital.

In the hours before his murder, Shakur’s group reportedly attacked Orlando Anderson, a member of a rival gang. Anderson died in a shooting in 1998.

The 8 News Now Investigators first reported the developments Tuesday morning.

Police urge anyone with information to contact LVMPD Homicide at (702) 828-3521, or by email at homicide@lvmpd.com. To remain anonymous, contact Crime Stoppers at (702) 385-5555 or go online to crimestoppersofnv.com.