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DUNCAN, Okla. — With a motive that’s both chilling and simple — to break up the boredom of an Oklahoma summer — three teenagers randomly targeted an Australian collegiate baseball player who was attending school in the U.S. and killed him for fun, prosecutors said Tuesday as they charged two of the boys with murder.
Prosecutor Jason Hicks called the boys ‘‘thugs’’ as he described how Christopher Lane, 22, of Melbourne, was shot once in the back and died along a tree-lined road on Duncan’s well-to-do north side. He said the three teens, from the grittier part of town, chose Lane at random and that one of the boys ‘‘thinks it’s all a joke.’’