Kris Kross rapper Chris Kelly died of a drug overdose, a toxicology screening from the Fulton County Medical Examiner's Office confirmed earlier this week.
A fatal mixture of drugs in the rapper's system contributed to the overdose.
Chris Kelly was found dead May 1 at his Atlanta home.
His mother, Donna Kelly Pratte, said that the rapper had a history of drug abuse and had experienced episodes in the past, according to the police report.
According to celebrity gossip site TMZ, the investigator did not indicate which drugs were found, but heroin and cocaine use were both suspected.
Police were called to Kelly's home around 4:30 p.m. May 1, and he was transported to an Atlanta Medical Center. He was pronounced dead at the hospital.
Kelly was one half of the early '90s teen rap sensations Kris Kross, and went by the name "Mac Daddy" along with Chris Smith, who went by "Daddy Mac."
The group catapulted to fame with the help of super producer Jermaine Dupri, becoming a global sensation with their biggest song to date "Jump."