Singapore's government says the condition of Lee Kuan Yew, the country's 91-year-old founding father, has improved slightly as he remains on life support in intensive care, where he is being treated for severe pneumonia.

A statement from the Prime Minister's Office on Saturday said Lee remains sedated and on mechanical ventilation in the ICU at Singapore General Hospital, and is continuing with his antibiotics. It said his "condition has improved slightly."

Lee was admitted to Singapore General Hospital on Feb. 5.

Singapore's first prime minister, Lee ruled for 31 years until 1990, and has been credited with transforming the city-state from a sleepy tropical port to a wealthy, bustling financial hub with one of the highest average incomes in the world.