Purdue student charged with killing roommate unfit for trial

LAFAYETTE, Ind. (AP) — A Purdue University student charged with murder in the stabbing death of his dormitory roommate is incompetent to stand trial, a judge ruled Thursday.Tippecanoe Circuit Judge Sean Persin appointed two doctors to treat Ji Min Sha until he is found competent to understand the charges against him and assist in his defense.Sha, a 22-year-old cybersecurity major from Seoul, South Korea, faces one count of murder in the October slaying of Varun Manish Chhedad, 20