Kim died at 8:15am local time, an aide said.
Hospital officials said the former prime minister was taken to Soonchunhyang University Hospital in Seoul from his home in Shindang-dong.
But Kim passed away before he had arrived.
Kim was born in 1926.
Kim graduated from the Korea Military Academy and played a key role in the 1961 military coup led by Park Chung-hee who rose to president and ruled South Korea for 18 years.
He was the founder of the Korean Central Intelligence Agency and served as Prime Minister twice, from 1971–1975 and from 1998–2000.
He was considered as one of South Korea’s most influential politicians in the 1980s-90s.
He was known as one of the “three Kims,” together with former Presidents Kim Young-sam and Kim Dae-jung.
More to follow…