Swedish electro pop due Icona Pop have postponed their upcoming live shows in San Francisco, Los Angeles, Seattle and Vancouver due to sickness.

The band had just recently played on the first day of Lollapolooza on August 2 and started “The Iconic Tour” of North America in mid August with local favorite k.flay and Sirah, but member Aino Jawo suddenly came down with an undisclosed illness and is following doctor’s orders to rest up. All postponed dates, including the Friday August 30th date at the Fillmore, will be rescheduled, according to the band’s publicist.

Exactly when those concerts will be made up is still to be determined. Ticket holders should be advised that there will be a further update announcement soon.

“We cannot tell you how sad we are and how much these shows meant to us.” Hjelt said in an announcement. “Our fans are so important to us and we live to perform on stage for you each night. We promise we’ll be back and will see you soon. In the meantime, please send lots of love and good energy Aino’s way!”

Icona Pop are most known for their summer single “I Love It” from their self-titled EP that went double platinum in the US, selling more than 2 million copies. Their second album This Is… Icona Pop has been confirmed for release on September 24.