Sean “Diddy” Combs is “throwing tantrums” about the attention fellow inmate Luigi Mangione has taken from him inside their notorious New York City lockup — and that may put the accused CEO killer on the disgraced rapper’s “s–t list,

Fox News Digital obtained new mugshot photos of Luigi Mangione, the 26-year-old charged with the murder of UnitedHealthcare CEO Brian Thompson in New York City.

The source claims that Diddy believes that the hate he’s getting from inside the jail is unfair because he’s maintained his innocence, while Mangione is getting support from inmates who are themselves angry with the healthcare system both inside the jail and in general.

Sean “Diddy” Combs is said to be furious that he is not as popular as fellow prison inmate Luigi Mangione, who is accused of killing UnitedHealthcare CEO Brian Thompson. The rapper, facing his own sex trafficking and prostitution charges,

Sean “Diddy” Combs, once the undisputed king of hip-hop, now finds himself grappling with an entirely different kind of rivalry—one that has erupted inside the grim walls of Brooklyn’s Metropolitan Detention Center (MDC).

Diddy is 'fuming' as Luigi Mangione, who is facing murder charges, has gained unexpected support from fellow inmates at the Brooklyn Metropolitan Center.