Kris Kross star Chris 'mac Daddy' Kelly has died at the age of 34.

The rapper was found unresponsive at his home in Atlanta, Georgia on Wednesday (01May13) and transported to Atlanta Medical Center, where he was pronounced dead, a representative for the Fulton Country Medical Examiner tells

The cause of death is not yet known and an autopsy is expected to take place on Thursday (02May13).

Stars flocked to pay tribute to Kelly as news of his death broke, with Timbaland and Big Boi among the first to offer their condolences.

R&B star Monica lamented, "Chris Kelly, may the peace of God comfort your family & all of those who love u."

Kelly and his bandmate Chris 'Daddy MAC' Smith were discovered in 1990 by Jermaine Dupri and the duo went on to release three studio albums.

They are best known for their hit 1992 song Jump, which spent eight weeks at number one on the Billboard Hot 100, and their penchant for wearing their clothing backwards.