The Boombox reports that legendary producer Timbaland's scheduled appearance on the Supafest tour over the weekend was abruptly canceled.

The massive hip-hop tour in Australia launched on April 9th. Performers include Snoop Dogg, Busta Rhymes, Ciara, Keri Hilson, Nelly and Bow Wow.

The Supafest promoters did not offer an explanation for the unexpected cancellation. The tour will continue as scheduled with the remaining artists.

This year Timbaland has released the new songs "I Don't Board This Plane" and "Take Ur Clothes Off." His fourth solo album, Shock Value III, is scheduled to drop later this year.