Bee Gee's Robin Gibb has been diagnosed with liver cancer, according to reports.
The singer was rushed to hospital earlier in the week but is thought to have been battling the condition since the start of the year.
A friend of the family allegedly told the Sunday Mirror: "Robin is not good and there is a lot of concern for him. You can use your wealth to call in the best experts but sometimes no amount of fame, prestige and money can change things when it comes to cancer.
"But Robin is a strong character, he is a fighter and has been encouraged by all the online messages from his fans. Dwina [his wife] is doing everything possible and hasn't left his side.
"There will be difficult times ahead but Robin will never give up and his loving family will make sure he has everything he needs. There is frustration because Robin has always looked after himself. He doesn't drink, eats well and exercises daily."
Gibb was taken to hospital back in April with abdominal pains. The singer fell ill on Sunday and has pulled out of a series of gigs due to take place this month in Brazil.
No further information on Robin Gibb's condition has been released.
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