The Central Bureau of Investigation, CBI has started investigation into the death of Swami Nigamananda. The 36-year-old seer had died in Dehradun on 13th June after fasting for nearly four months in protest against illegal mining on the Ganga riverbed. Our Corerspondent reports that the Uttarakhand government had requested for a CBI probe after coming under strong pressure from local religious leaders, who had alleged foul play in the death of Nigamananda.