The following message was posted on the official Slayer Facebook page:

"Due to circumstances out of the Slayer's control, Asuncion Paraguay's Maquinaria Festival, 6th November, has been cancelled. They hope to return soon!!"

Check out the updated south american tour schedule:

Nov 1 - Mexico - Ciudad de Mexico - Arena Ciudad de Mexico
Nov 3 - Mexico - Guadalajara - Explanada Lopez Mateos
Nov 8 - Argentina - Buenos Aires - Estadio Malvinas Argentinas
Nov 10 - Chile - Santiago - Club de campo Las Vizcachas
Nov 12 - Chile - Santiago - Teatro Caupolicán