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Bollywood's "first superstar" Rajesh Khanna is ill and has not eaten for three or four days, his manager says.
Khanna, 69, was admitted to hospital briefly in April after complaining that he felt unwell. The cause of his health problems is unclear.
He is at home being looked after by his estranged wife, actress Dimple Kapadia.
The veteran actor has starred in more than 160 films, including major hits such as Kati Patang, Aaradhana, Anand and Amar Prem.
"He is unwell, and at home. He has stopped food intake for three to four days. Dimple is continuously by his side and his daughter Rinke also visited him," the Press Trust of India quoted the actor's manager, Ashwin, as saying.
Khanna made his name playing the romantic lead in a string of films which were massive hits in the 1960s and 1970s.
He had a huge following and was mobbed by fans whenever he appeared in public.
During the peak of his popularity, there were reports of his female fans marrying his photographs.
Popularly called "Kaka" by his fans, the actor has won several industry awards. He was recently seen in his first television commercial.