US prosecutors handling the case of two black teenagers accused of shooting dead a white Australian baseball player said Friday there was no evidence to suggest the killing was racially-motivated. The murder of Chris Lane, 22, in the small Oklahoma town of Duncan has triggered a race debate in America after it emerged that one of the victim's alleged killers had posted racist comments on Twitter earlier this year. Several commentators have questioned why authorities had not pressed to have hate crime charges added to the indictment of James Edwards, 15, and Chancey Luna, 16, who are both charged with...