Robin Gibb of the Bee Gees is in a coma after contracting pneumonia, according to a statement on his official website.
"Sadly the reports are true that Robin has contracted pneumonia and is in a coma," the statement read. "We are all hoping and praying that he will pull through."
According to the Associated Press, the 62-year-old musician's family members, including his wife Dwina and brother Barry were at Gibb's bedside in a London hospital.
Last month, Gibb underwent emergency surgery to remove a blood clot in his colon. Gibb's rep confirmed the surgery, but said it was unrelated to a mysterious illness he has battled for months.
Gibb's son Robin-John Gibb acknowledged that his father is seriously ill and told the wire service that the family is "praying for him and hoping he has a speedy recovery."
Gibb has been in and out of the hospital in recent months and has sparked concern about his health due to his frail appearance. In early February, he said doctors had removed a growth in his colon and that he felt "fantastic." A message about his latest medical procedure was posted on his website on Wednesday.
"On Monday evening, 26 March 2012, Robin Gibb underwent emergency surgery to remove a blood clot in his colon that caused perforation," the statement said. "This follows earlier surgery for a twisted intestine and is unrelated to Robin's recent illness. Robin underwent the operation successfully, he is awake and has been talking to his doctors. He is currently being monitored and resting in the hospital and his family are hoping for his full recovery."
In October 2011, a message posted on his website said he was hospitalized for four days to treat inflammation in his colon.
"I was diagnosed with a growth in my colon," Gibb told BBC Radio 2 in an interview that aired on February 3. "It was removed. And I've been treated for that by a brilliant doctor, and in their own words 'the results have been spectacular.'"
"I've been treated for that by a brilliant doctor, and in their own words 'the results have been spectacular,'" he said. "And they said, 'What are you doing that we don't know about?'" he added. "And I said, 'I'm not doing anything.' And in fact, I haven't taken a single tablet."
The singer did not say whether or not the growth was cancerous and also made no mention of chemotherapy or other treatments. Previous reports had said he was battling liver cancer.
"The prognosis is that it's almost gone and I feel fantastic and really, from now on, it's just what they could describe as a 'mopping-up' operation," Gibb said. "I'm very active and my sense of well-being is good."
Gibb recently collaborated with his son RJ for his first classical album, "The Titanic Requiem." The record commemorates the 100th anniversary of the deadly ship disaster and was released on March 27. The Royal Philharmonic Orchestra performed music from the album at a world premiere in Central Hall, Westminster in London on April 10. Gibb was slated to attend the premiere, but missed it due to his illness.
Gibb also underwent surgery in 2010 for a blocked intestine. His twin brother Maurice, the third member of the Bee Gees, died in 2003 at age 53 in Miami. He had suffered a cardiac arrest before an emergency surgery for an intestinal blockage.
The Bee Gees, a Grammy-winning pop and disco trio known for their falsetto sound, was formed in the late 1950s and was made up of the two brothers and their older brother, Barry. The group was best known for 1970s hits such as "Stayin' Alive," "How Deep Is Your Love," and "More Than a Woman," all of which were featured on the soundtrack of the 1977 dance film "Saturday Night Fever."