Kelly's mother, Donna Kelly Pratte, told authorities that her son became sick after taking cocaine and heroin on the night before he died, according to a police report obtained by the news agency. Pratte and Kelly's uncle, Lamar Williams, told police that Kelly had a history of drug abuse and experienced similar episodes in the past.
Kelly was found unresponsive on Wednesday in his Atlanta home. Paramedics tried administering CPR, but he was pronounced dead at a local hospital. An autopsy has already been performed on Kelly's body, and toxicology screening is pending to determine the cause of death.
Kelly, and his longtime rap partner Chris Smith, catapulted to fame in 1992 after the release of their debut album, Totally Krossed Out, and its No. 1 single, "Jump."
"To the world Chris was Mac Daddy but to me, he was a son I never had ...," Jermaine Dupri ,who discovered the duo, said in a written statement on Thursday. "When I think about it, I spent more time with Chris and Chris than damn near anybody in my whole life, so you can imagine how bad this hurts. I will always love you Chris, and I will never let the world forget you, may God bless your soul."
Kris Kross reunited earlier this year for a concert celebrating the 20th anniversary of Dupri's So So Def record label.