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Bono will return to Ireland over the next few days to recuperate after his shock emergency back surgery.

The upcoming dates on U2's 360 Tour have been shelved after Bono's back was injured while the band was rehearsing in Germany.

Sources are remaining tight-lipped about the type of surgery and a statement is expected from the band over the next few days.

U2.com is telling fans only that Bono was "admitted to a specialist neuro surgery unit in a Munich hospital, and is under the care of neurosurgeon Prof. Dr. Jorg Tonn and Dr Muller Wohlfahrt."

"Bono will spend the next few days there, before returning home to recuperate."

The shock surgery came just days after Bono celebrated his 50th birthday.

U2 manager Paul McGuinness said the surgery had been "very disruptive" for the U2 tour crew.

"We have over 400 people converging on Salt Lake City and some of those have been turned around and told to stay at home until we make our new plan,” he said.

U2 were just about to start the second leg of their 360 Tour with a concert in Utah on June 3.

Fans are being advised to monitor the U2.com website.

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