Ghulam Ishaq Khan, Pakistan's president from 1988 to 1993, died Friday following a bout of pneumonia, his son-in-law said. Khan was 91.
Khan's son-in-law, Arfan Ullah Murwat, said the former Pakistan president, who won power following the 1988 death of military dictator Gen Zia-ul Haq in a mysterious plane crash, had been ill for the past three months.
Khan died in the northern city of Peshawar, where he spent most of his life, Murwat said. His funeral will be held later Friday in Peshawar.
"He was suffering form pneumonia, and it was the cause of his death," Murwat told the agency in Peshawar.
Khan, a career bureaucrat, was a close ally of Haq and held the post of chairman of Pakistan's Senate when Haq was killed in a plane crash in eastern Pakistan along with then US Ambassador Arnold L Raphel and several top Pakistani generals.
Regarded as a strong-willed figure, Khan worked alongside former Prime Ministers Benazir Bhutto and Nawaz Sharif but dismissed the governments led by both in 1990 and 1993 respectively on charges of corruption and mismanagement.
"He (Khan) was a man of integrity," said another son-in-law, Anwar Saifullah. "He was an honest person, and he never gave any undue favor to any one."
The row between Khan and Sharif continued following a subsequent Supreme Court decision that reinstated Sharif's government.
Eventually, Pakistan's powerful military intervened in the conflict and forced Kahn to resign.
Khan, an ethnic-Pashtun born in northwestern Pakistan's Bannu district, is survived by his wife, four daughters and one son.