LONDON (AP) -- Bee Gee Robin Gibb says on his website that he is recovering from a serious illness.
RELATED: Odd Rock Star Relationships
The star says he has been "very unwell" but is now "on the road to recovery."
RELATED: Sober Stars & More Celeb Chatter
Gibb's extremely gaunt appearance and the cancellation of several public appearances have sparked fears that he is seriously ill. He was hospitalized last month with colon inflammation and other problems but has been discharged.
The 61-year-old Gibb thanked his fans Wednesday for their messages of support. He said he was grateful for their prayers and good wishes.
RELATED: Most Thankful Celebs
The Bee Gees have sold millions of records and are best known for the "Saturday Night Fever" soundtrack which includes the hit "Stayin' Alive."