Fang Zhaoling, the mother of former chief secretary Anson Chan Fang On-sang, died yesterday at the age of 92.
Fang, a renowned painter, was admitted to St Paul's Hospital in Causeway Bay in the afternoon, according to a family member who did not wish to be named.
She died shortly after efforts to treat her heart problems failed.
Hospital sources said Mrs Chan visited her mother in the afternoon.
Mrs Chan's husband, Archie Chan Tai-wing, was quoted by Commercial Radio as saying that his mother-in-law's health had been fluctuating recently.
He said Mrs Chan was in sorrow at her mother's death.
Family members visited the Hong Kong Funeral Parlour in North Point to make arrangements for the funeral. It is understood the family has reserved February 23 to 28 but the exact date for the funeral is yet to be fixed.