The untimely death of Tupac Shakur continues to be a mystery, even after nearly 20 years.

Tupac Shakur is the one rapper who has seemed to have a long lasting career and impact on culture even nearly 20 years after his death. It might have to do with the fact that there are rumors that he’s not actually dead or the fact that his untimely murder still remains a mystery.

National Geographic is the latest to examine Tupac’s death. The channel will cover it in its upcoming three night, six-hour documentary series The 90’s: the Last Great Decade?

Gobi Rahimi, director of Pac’s “2 of Amerikaz Most Wanted” and friend spoke with the network to give his insight on the night of the fatal shooting.

"The atmosphere in Club 662 was very funky," Rahimi said of the Vegas club owned by Death Row Records head Suge Knight. "It just seemed like there were a lot of questionable characters in there." After the shooting, Rahimi recalls the vibe in the hospital. "Me and the Outlawz, we all took shifts," he said. "And I think they had weapons in their car because the whole time we were there, we were fearful [whoever shot Tupac] was gonna come finish him off."

The clip also addresses the rumor that Pac’s Outlawz buddies smoked his ashes in a blunt after his death. Rahimi said part of the reason the mystery has yet to be solved is because of how police felt about the rapper.

"Law enforcement around the country weren't big Tupac fans," he said. "I'm absolutely positive they know what happened. This is America. We found Bin Laden."

The '90s: The Last Great Decade?, which will air from July 6th to July 8th at 9 p.m. EST, contains interviews with Roseanne Barr, Tony Blair, Matthew Perry, Jason Alexander, Monica Lewinsky, Vanilla Ice and more, covering events ranging from the gossipy pratfalls of Bill Clinton's presidency to more somber events such as Columbine.