Indian police believe two American missionaries encouraged John Allen Chau to go to a forbidden island where he was killed by an isolated tribe he was trying to convert, a top investigator said Saturday. Dependra Pathak, head of police in the Andaman and Nicobar islands, told AFP the suspects had left India, and that there was still no sign of the body of Chau -- who was killed last month in a hail of arrows fired by the Sentinelese tribe. "We are investigating the role of at least two Americans, a man and a woman, who met with the man...