According to its Twitter, Tempe, AZ’s Monster Mash Music Festival has canceled its first day on October 30 to “unforeseen circumstances.”. The following two days are still set to go on as planned.

The October 30 lineup included appearances from Santana, John Fogerty and Tedeschi Trucks Band. The remaining lineup features Tool, Linkin Park, Rob Zombie, Primus and more.

Tickets for the final day of the festival are still available.