Bhutto was suspected of suffering from cancer in 1982, the year when she left Pakistan for medical treatment. For the last several years of her life, she had also been suffering from Alzheimer's disease. In the mid-1990s, particularly after the death of her son Mir Murtaza Bhutto in 1996, she withdrew from public life. Party sources suggest this may also have coincided with the time that she began to show symptoms of Alzheimer's. According to her senior party leader, Bhutto's disease was so advanced that she was even unaware of the assassination of her daughter, Benazir. She used a ventilator until her last days. She died at the age of 82 in the Iranian Hospital Dubai on 23 October 2011. Her body was flown to her hometown of Garhi Khuda Bakhsh in the Larkana District the next day, and was buried next to her husband and children in the Bhutto family mausoleum at a ceremony attended by thousands of mourners.