( CNN ) -- Atlanta-area authorities are investigating the death of Chris Kelly , half of the 1990s rap duo Kris Kross , as a possible drug overdose , Fulton County Police Cpl . Kay Lester said Thursday . Kelly , 34 , died Wednesday at an Atlanta hospital after he was found unresponsive at his home , police said . After paramedics took him to the hospital , a woman who identified herself as Kelly 's friend told an investigator that Kelly had taken a mixture of heroin and cocaine Tuesday night , and that she had brought Kelly home `` to recover from his drug use , '' according to a police report . Betty Honey , with the Fulton County Medical Examiner 's Office , said that an autopsy showed no signs of trauma or foul play . A toxicology report is expected to be complete in three to four weeks , at which point , a cause of death will likely be determined , she said . Kelly , together with Chris Smith , shot to stardom in 1992 with `` Jump , '' which spent eight weeks on top of the Billboard Hot 100 . A # TBT in honor of Chris Kelly . The duo opened for Michael Jackson that year on his Dangerous World Tour . Their penchant for wearing their clothes backward was , at least for a time , widely emulated . `` I 'm wearing my clothes to work backwards tomorrow , '' Michael Skolnik , edito-in-chief of the hip hop site Global Grind said , when he learned of the death . Leslie Tookes , a CNN project coordinator , lived next door to Kelly . Like others , she was saddened by his untimely death . `` We often heard him playing classical music and the piano , '' Tookes said . `` He was a low-key type of person who was very talented and courteous , friendly and wonderful to our 5-year-old twins . `` Indeed , gone too soon . '' His family also mentioned the notable wardrobe adjustment in a statement mourning Kelly 's passing . `` 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 , '' Kelly 's family said in a statement . People we lost in 2013 : The lives they lived . Discovered at a mall . Kelly and Smith were 13-year-olds when they were discovered in 1991 at an Atlanta mall by producer Jermaine Dupri . Going by the stage name Mac Daddy ( with Smith known as Daddy Mac ) , the pair followed up their smash `` Jump '' with the single `` Warm It Up . '' Together , the songs pushed their debut album , `` Totally Krossed Out , '' to multiplatinum status . Next came 1993 's `` Da Bomb . '' But the album failed to find the following of the duo 's debut , in large part because the boys had hit puberty and they were marketed with a tougher image . Their career never again reached the heights of their debut , but they continued to make music . In 1996 , the duo released the album `` Young , Rich and Dangerous . '' The pair reunited for one night in February for a 20th anniversary party for Dupri 's So So Def label . Rapper Da Brat , who also performed that night , wrote about Kelly 's death , `` REST IN PEACE TO MY LIL BRO CHRIS KELLY OF KRIS KROSS . Dam was n't we JUST at rehearsal and doin a So So Def20 show ? '' Share your memories . CNN 's Ed Payne , Chelsea Carter , Jason Hanna , Chuck Johnston and Tresha Lindo contributed to this report .
Note : Autopsy shows no signs of violence or foul play . Woman told police Kelly had used heroin and cocaine Tuesday night . He died peacefully at an Atlanta hospital . Kris Kross topped the charts with ` ` ' '' in 1992 .