SINGAPORE — The health of Singapore's founding leader and ex-prime minister Lee Kuan Yew has "worsened" due to an infection, the government said Tuesday.

Lee, 91, has been hospitalised at the Singapore General Hospital since February 5 for severe pneumonia.

"Mr Lee Kuan Yew's condition has worsened due to an infection. He is on antibiotics. The doctors are closely monitoring his condition," said a statement from the office of his son, Prime Minister Lee Hsien Loong. — AFP