The U2 singer sustained an injury while preparing for the North American leg of the band`s 360 Degree world tour. Bono was hospitalised in Germany, but the name of the medical centre is unknown.
"Bono has today undergoneemergencybacksurgery for an injury sustained during tour preparation training. He was admitted to a specialist neurosurgery unit in a Munich hospital," his spokesman said. "Bono will spend the next few days there, before returning home to recuperate. Once his condition has been assessed further, a statement will be made regarding the impact on forthcoming tour dates."
U2 are due to play their first show in Salt Lake City on June 3. The date has now been postponed, but it is unknown when it will be rescheduled, or when Bono will be well enough to perform.
"It`s unfortunate that we`re inconveniencing fans. We will make plans to reinstate these dates as soon as possible," U2 manager Paul McGuinness said. "Obviously, it`s been very disruptive to our crew. We have over 400 people converging on Salt Lake City. Some of those have been told to turn around and told to stay at home until we make our new plan."