The murder of legendary rapper Tupac Shakur continues to be one of the most intriguing mysteries over 20 years later. A&E created a docu-series "Who Killed Tupac?" and producers dug up a document that revealed the handgun that was used to kill the young rapper/actor turned up in a Compton backyard 19 years ago but has since disappeared.

According to the document, a .40 caliber Glock was found by a citizen in his backyard in 1998 and reported to police. Compton PD records show the weapon was booked as found property on May 30, 1998. That Glock along with 3,800 confiscated firearms were transferred to the L.A. County Sheriff's Dept. in 2000 when they took over law enforcement of Compton.

In 2006, Deputy T. Brennan - who was working the Notorious B.I.G. murder - was sifting through records when he recognized the address where the gun was found, as the home of the girlfriend of a prominent Crip member, who was known to have issues with 2Pac. Brennan immediately ordered ballistic testing and the results were a match for the firearm used to kll Tupac.

The Glock, however, was never sent to Vegas, where Pac's muder was still unsolved. A federal prosecutor assigned to the case, instead cited concerns that the discovery might alert potential conspirators, and he recommended that the gun not be turned over to LVPD. It was also speculated that there were concerns about renewed gang violence if it was revealed that a Crip was tied to Tupac's murder.

The information was revealed to Tupac's brother, Mopreme Shakur when he met with civil rights attorney Benjamin Crump during an episode of the docu-series; he was shocked by the details. A&E says it contacted LVPD about the information and some officers said the gun definitely was not given to them, while others said they were unsure.

The final episode of "Who Killed Tupac?" airs Tuesday night.

Source: tmz.com