Los Angeles Police Department members are growing increasingly concerned a sequel to the summer blockbuster film "Straight Outta Compton" will detail how cops were somehow involved in the brutal slaying of rap legend Biggie Smalls.

After "Compton" bagged $135 million and counting over its first few days at the box office, RadarOnline reports Hollywood types quickly began hyping news of a sequel that will reportedly focus on the rise of fellow rappers Snoop Dogg and the late Tupac Shakur.

Such news appears to have many LAPD rank and file members on alert, not to mention concerned that the same East Coast/West Coast feud also believed to have resulted in Shakur's death will be thoroughly explored throughout the film.

"The upper brass of the LAPD always gets nervous about any projects related to Notorious because of the belief that former cops, Rafael Perez, David Mack and Nino Durden were somehow tied to the murders," said a source.

Reports state, while authorities still publicly classify the case and investigation as open, currently there are no lawmen assigned to it or working on it, and is classified as a cold case.

Years after his death, Biggie's mother, Voletta Wallace, and his widow, Faith Evans, filed a wrongful death lawsuit naming Perez and his partner Durden as defendants. The suit also alleged that the murder was committed in "in a very efficient, organized and professional manner, suggesting that a high degree of coordination and planning preceded his murder."

The filing also claimed Perez, who was the central figure in one of the biggest scandals in the history of the LAPD, admitted to cops that he and Mack "conspired to murder, and participated in the murder of Christopher Wallace."

Radar adds a police source previously told the website, "The LAPD Robbery Homicide unit tasked with investigating Biggie's murder knows exactly who fired the gun, and which people were involved in the planning."

Still, the source predicted there will never be an arrest in the case because it would expose too much of the corruption that went on within the department back then all the way up to the highest ranks.

There have also been widespread rumblings that Death Row Records founder Suge Knight ordered Biggie's murder as retaliation for Shakur's killing six months earlier in Las Vegas.

"If the movie helps to finally bring Notorious B.I.G.'s killer(s) to justice, the LAPD should have no problem with it," added a source. "What do they have to hide?"