AEG released the following press release:
We are sorry to announce that tonight's show (Monday May 6) in Salt Lake City, UT at The Great Saltair will be cancelled due to Hayley still being sick. All tickets will be refunded at point of purchase. We apologize to all the fans in Salt Lake City and will certainly make it up to you as soon as we can. Paramore
In Las Vegas, according to the Sun's review three days ago: Williams announced that she had suffered food poisoning and had been busy throwing up for the past day. "Tonight I'm going to need you to help me sing all these songs," she said before bringing up a Paramore superfan named Brit (attending her 32nd concert) to help out with "Misery Business." Williams sounded ragged and winded at times throughout the rest of the show.