This sad news just keeps getting worse. After passing away at the young age of 34, it was discovered that Chris Kelly, of the '90s rap group Kris Kross, had both cocaine and heroin in his system at his time of death.

The events leading up to Kelly's death are beginning to materialize and they don't sound pretty. The rapper was at his mother's Atlanta house after using both cocaine and heroin when he collapsed on Wednesday (May 1) afternoon. His mom, Donna Kelly Pratte, called the authorities, but paramedics found Chris unresponsive when they arrived at his house. He was taken to the hospital, but was unfortunately pronounced dead upon his arrival.

According to People Magazine, Chris Kelly's uncle said his nephew, "had an extensive history of drug abuse." The police report obtained by TMZ said Pratte would take her son to her house quite often to recover from his drug use.

Kelly's mother also released a statement saying, "To millions of fans worldwide, he was the trendsetting, backwards pants-wearing one-half of Kris Kross who loved making music. But to us, he was just Chris – the kind, generous and fun-loving life of the party."

Our thoughts are with the Kelly family at this very difficult time.

Watch the Kris Kross 'Jump' Video