Chris "Mac Daddy" Kelly of Kris Kross fame was pronounced dead at an Atlanta hospital Wednesday night.

Bryan-Michael Cox and Big Boi both hit Twitter to express their condolences after hearing the news.

Kris Kross had just performed at the 20th anniversary So So Def concert, and there was no rumor of any wrong doing.  As of now, the music world can only mourn and speculate as to why we lost this 90's Hip Hop legend.