Thousands are mourners are flocking to Puttaparthi to publicly mourn the death of Sai Baba, known officially as Sri Satya Sai Baba. Prime Minister Manmohan Singh will visit on Tuesday. Sai Baba had millions of followers around the world. As a child he told his parents he was the reincarnation of the 19th century Indian holy man Shirdi Sai Baba. In 1950 he founded his first ashram and quickly built a global following. Although regarded as a god by many of his followers, he faced his share of controversy while alive. His trust is estimated at $9 billion.