Bollywood star Amitabh Bachchan is in a "stable condition" after abdominal surgery at a hospital in Mumbai (Bombay), authorities say.
Bachchan is a legend in Indian cinema
Bachchan, 63, was operated on at the Leelavati hospital on Wednesday night for diverticular disease - a condition caused by inflammation of the colon.
He will be in intensive care for three days for observation, reports say.
The actor became unwell on Sunday and was treated first in Delhi before being taken to Mumbai.
Bachchan, hero of more than 100 films and once dubbed the "most famous actor of the millennium" by a BBC News website readers' poll, was admitted to the hospital late on Monday night after complaining of abdominal pain.
The hospital authorities say that he is doing well since the operation.
The actor is being given food intravenously and is due to be kept in the intensive care unit for a more few days.
Diverticular disease is caused by the infection or inflammation of small pouches in the colon or large intestine.
Fans, Bollywood stars and several industrialist friends have been thronging the Mumbai hospital where Bachchan is recuperating.
Bollywood actors Kajol and Ajay Devgan and Jayapradha, who co-starred with Bachchan in many films, visited the hospital.
Beyond the world of film, close friends such as politician Amar Singh and industrialist Subroto Roy also visited the actor.
Elsewhere in the country, fans have been offering prayers to the actor's speedy recovery in temples.
"God has listened to our prayers. Amitabh's surgery was a success last night," said a fan, Sougata, who has been offering prayers at a temple in the eastern city of Calcutta for the past four days.
"He (Bachchan) is an icon for all migrants coming to Mumbai to earn their livelihood," Rashid Ali, 20, a fan from Uttar Pradesh who has been outside the hospital since Bachchan has been admitted, told the AFP news agency.
Bachchan's surgery has made front page news in Indian newspapers and led the television newscasts which have been carrying scrawls of "get well" messages from his fans all over the country.
It is not clear whether the doctors had found any link between Bachchan's ailment and a serious abdominal injury that he suffered during shooting a Bollywood film in 1982.
Bachchan complained of feeling unwell while attending a function in the northern city of Lucknow and was flown to Delhi for initial treatment on Monday.
But he said he wanted to go to Mumbai so that his family physician could treat him.
Fans are praying for the star's speedy recovery (Photo: Amitabh Bhattashali)
Bachchan, who has starred in over 100 films, has shown no sign of slowing down as he has got older.
The Bollywood icon has had 11 film releases so far in 2005 and another two are lined up for December - more than he has had during any of his 40 years in cinema.
He is also India's biggest television star, presenting a popular hour-long show modelled on the hugely popular game show, Who Wants To Be A Millionaire, on Rupert Murdoch's Star TV channel.
In 2000, he became the first Indian movie actor to be displayed at Madame Tussaud's wax museum in London.
Last year Bachchan said he was ready to act in a Hollywood film after years of turning down offers.
He said he had discussed working with British director Sir Ridley Scott when they both attended an awards ceremony in Marrakech in Morocco but nothing was finalised.
The son of a Hindi poet, Bachchan quit his job as a freight broker in Calcutta and set off for Bombay in pursuit of a career in the movies.
His acting career began in the 1970s and 1980s when he made his name as an action hero.
An increasing number of Bollywood films are breaking into mainstream cinema.