Green Day have postponed the first three dates of their upcoming tour and cancelled a fourth show due to illness "affecting several members of the band and its crew".
The band announced on Sunday that concerts will be rescheduled in St Louis, Chicago and Detroit in the US, and a fourth concert in Toronto is being cancelled.
"We're so sad to announce we have to postpone three shows and cancel Toronto," said the band. "Many of us have been battling this infection for days on end to be ready, and it just got the best of us."
Tickets will be refunded, the band said.
GREEN DAY POSTPONE FIRST THREE DATES OF UPCOMING NORTH AMERICAN CLUB TOUR AND CANCEL TORONTO APPEARANCE: https://t.co/rhr6SZD4YX
-- Green Day (@GreenDay) September 18, 2016
Earlier this month, the punk band announced their first tour dates in the UK in three years.
The American Idiot rockers will play three arena shows in the UK in February 2017, following a number of dates across Europe.
The last time the band, fronted by lead singer and guitarist Billie Joe Armstrong, performed in the UK was in 2013 at the Reading and Leeds festivals.