Lee Kuan Yew, Singapore's first prime minister, has been discharged from a hospital following a brain-related blockage, but he remains under doctors' observation.

The 89-year-old Lee was admitted to a hospital Friday after experiencing a transient ischaemic attack, which occurs when blood flow to the brain stops for a period of time. A statement from the Prime Minister's Office says he was discharged Sunday and was resting at home. He'll receive anti-coagulation treatments to discourage the formation of blood clots.

A founding member of the ruling People's Action Party, which transformed the country from a slow port city to a bustling metropolis, Lee became prime minister in 1959 and held power for 31 years until he stepped down in 1990. His son Lee Hsien Loong is the current prime minister.