Yesterday, police arrested Quincy Homere and Jamar Hill in the 2015 killing of Coke Boys rapper Chinx.

Both men were already locked up when they were charged.

Lt. Richard Rudolph, Commanding Officer of the Queens South Homicide Squad, spoke to XXL about how they finally cracked the case after a more than a two-year investigation.

Rudolph says Homere— an aspiring rapper who goes by the name Qwality—fought Chinx on Sept. 27, 2009, while both were housed on Rikers Island.

“We're not exactly sure what the fight was about but our perpetrator Quincy probably got the worst of it and he wanted to get back at Chinx,” Rudolph tells XXL. Chinx had previously served more than three years in jail on robbery and drug charges from June 2005 to October 2008, but was taken back into custody shortly thereafter due to a parole violation. “When he saw Chinx's career starting to blow, he took it real personal and figured that his [own] career was going south... It just festered inside of him.”

Things between Homere and Chinx kept festering until April of 2015 when they had a verbal confrontation during a show in Philly. French Montana, Uncle Murda, and other prominent rappers are said to have witnessed the yelling and allegedly "blacklisted" Homere.

A few weeks later, Chinx was shot dead in his Porsche after police say Homere and Hill followed him from a show he had finished in Brooklyn to his hometown of Queens.

Both men have been charged with second-degree murder, second-degree attempted murder, first-degree assault, and second-degree criminal possession of a weapon. The authorities believe only Homere fired a weapon, but Hill assisted in planning the attack.

If convicted, they each face 25 years to life in prison.