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A man with the help of a tantrik allegedly sacrificed a seven-month-old baby to appease God, so that he and his wife could have a child in Jharkhand's Seraikela-Kharswan district, police said today. Bhadoi Kalindi and a tantrik, Karmu Kalindi were arrested by police yesterday from Chaida village under Tiruldih police station, said Sub-Divisional Police Officer (Chandil), Sandeep Bhagat.