Malaysian football legend Santokh Singh is in a coma at the Kuala Lumpur Hospital.
The 57-year-old who played at the 1972 Olympic Games in Munich, Germany, has been warded at the intensive care unit over the past four days.
His condition has been reported as stable.
On Monday, Santokh collapsed and lost consciousness while at home in Setapak.
His wife, Taljit Kaur, believes that the former international could have been struck by a viral infection as doctors had yet to determine the source of his ailemnt.
She said Santokh did not have any health problem when he collapsed at their home about 11am.
"A day earlier, my husband was in great health and even managed to conduct a coaching programme," she told reporters here today.
Meanwhile, Football Association of Selangor (FAS) general secretary Datuk Hamidin Amin who visited Santokh today, said his contributions to Malaysian soccer during the 1970s were invaluable.
He said FAS would help in any way it could to facilitate Santokh's speedy recovery, and urged fans to pray for their idol.