Pop superstar and Isle of Man resident Robin Gibb has been rushed to hospital with severe abdominal pains.
He had been due to play a series of concerts in Brazil, but doctors have told him not to travel while they diagnose the problem.
Last year the 61-year-old Bee Gee had surgery for a blocked intenstine, but it's not known if it's a recurrance of that condition.
Complications resulting from a twisted intestine led to the death of Robin's twin brother, Maurice, in 2003.
According to reports, Robin was taken ill on Sunday morning.
It's understood he is due to see a specialist today (Tuesday), with test results expected tomorrow.
Robin is apologising to fans for cancelling the dates.