Attorneys say the teenager charged with killing four students at Michigan high school will pursue an insanity defense. A notice was filed yesterday. The notice should trigger mental health exams of 15-year-old Ethan Crumbley, who is charged as an adult with murder and other crimes for the shooting at Oxford High School on Nov. 30. The filing comes the same day as a new lawsuit alleging negligence by school officials and Crumbley’s parents over the attack.
