KUALA LUMPUR - Malaysia's Mahathir Mohamad went back to work on Tuesday (Feb 25) with the new title of interim prime minister, a day after he resigned the leadership in a shock move that plunged the country into political turmoil.

Dr Mahathir, who at 94 is the world's oldest government leader, made no comment as he arrived by car at his office in Putrajaya. He disbanded his entire cabinet late on Monday after resigning as prime minister and agreeing to a request from Malaysia's king to stay on until a successor is named.