Outkast's reunion celebrations have been hit by a family tragedy following the death of rapper Andre 3000's father.

Lawrence Walker passed away on Wednesday (12Feb14) following a heart attack in Georgia, according to multiple reports.

The Outkast rapper, real name Andre Benjamin, has yet to comment on the sad news, which comes less than a year after the hip hop hitmaker lost his mother in May (13), and no further details have been released.

Last month (Jan14), Andre 3000 and his partner Big Boi announced plans to end their hiatus and perform together at 40 festivals across the world this year (14).