Pune, May 31 -- Investigators probing Pune and neighbouring Pimpri Chinchwad's hooch tragedy suspect that a fatal mix-up between methanol and ethanol may have triggered one of the region's deadliest incidents of illicit liquor poisoning that has claimed 16 lives till now. State excise department officials said prime accused Yogesh Wankhede allegedly procured methanol instead of ethanol as he lacked both formal education and technical knowledge of chemicals. "There is a strong possibility that he did not understand the difference between the two chemicals, which may have led to this tragedy," an official said. Girish Hukare, joint commissioner, FDA Pune, said, "Methanol cannot be sold without verification of the purchaser. Violations can att...