Chris “Mac Daddy” Kelly, one half of the 1990s kid rap duo Kriss Kross, died last night at an Atlanta hospital at the age of 34, said a Medical Examiner’s Office spokesman.

Dumonder Dawson, an investigator for the ME’s Office, said Kelly died yesterday evening.

An autopsy is planned for this morning.

The Atlanta Journal-Constitution reported that Kelly had been found unresponsive at his home and that the death is being investigated as a possible drug overdose.

Kelly, an Atlanta native, and partner Chris “Daddy Mac” Smith made up Kriss Kross, which was best known for the 1992 hit single “Jump.”