Tupac Shakur's death is surrounded by mystery, but for his devoted fans, a recent revelation would please them greatly.

In 1996, the rap star was shot four times after attending a Mike Tyson boxing match in Las Vegas, he died a week later in hospital on September 13th.

The murderer, who pulled the trigger in a drive-by assassination, has never been identified and maybe never will, but we now know what Tupac's final words were.

"F*ck you," were the last words that the wounded 25 year-old uttered to a policeman, who repeatedly asked him who the shooter was while he laid in the middle street.

"He looked at me and he took a breath to get the words out, and he opened his mouth, and I thought I was actually going to get some cooperation. And then the words came out: 'F--- you,'" former Las Vegas Metropolitan Police Officer Chris Carroll told Vegas Seven.

Adding, "After that, he started gurgling and slipping out of consciousness. At that point, an ambulance showed up, and he went into unconsciousness."

Tupac was riding shotgun in the BMW of Suge Knight, the Death Row Records founder, when a group of men in a white Cadillac drove beside it and rolled down a window before firing the weapon.

Many people believed a man called Orlando Anderson, who was beaten by Tupac's entourage shortly after the boxing match in MGM's casino, was responsible for murdering Shakur, but he was killed in an unrelated shooting in Compton, 1998.

MORE: John Singleton Directing Tupac Movie. Michael B Jordan, Stand By Your Phone

The fact that Tupac used his dying breath to stick to the code of the streets, and not snitch, is one of the reasons why Carroll kept quiet for the past 17 and a half years.

MORE: Tupac Shakur Was Set To Audition For Star Wars Episode I As A Jedi Master

"I didn't want Tupac to be a martyr or hero because he told the cops 'F--- you.' I didn't want to give him that," Carroll told the publication. "I didn't want people to say, 'Even when the chips were down, his life on the line, he still said 'F--- you,' he still wouldn't talk to the police.' I didn't want him to be a hero for that. And now enough time has passed, well, he's a martyr anyway; he's viewed as a hero anyway. My story, at this point, isn't going to change any of that."

Tupac Shakur
Tupac Shakur said "f*ck you" to a cop moments after being shot