The death was confirmed by local Altanta DJ Greg Street who wrote in a blog post:
Sad to hear the loss of my lil homie, Chris “Mac Daddy” Kelly. I met him and Chris “Daddy Mac” Smith in ’93. Their song “Jump” had been #1 on the billboard charts for eight weeks. Everyone knows Kriss Kross [sic.] for their music and the crazy way they used to dress, but once they started working with So So Def, they became family.
The cause of death was not immediately known and an autopsy is scheduled for Thursday morning. We'll update this post with more details as they arrive.
Update, Thursday: TMZ is reporting that a police reports shows Kelly "had been using a combination of cocaine and heroin the night before his death."
In the meantime, you should watch this music video:
Okay, one more: