Steven Strumpf's defense attorney is asking for a mental examination for the 31-year-old Columbia man accused of killing his father last year and then burning the body in his family's garage. The motion filed in Boone County Court this month claims Strumpf may be suffering from a mental disease or defect that could make him unfit for trial. Additionally, the motion claims Strumpf may not have been mentally responsible for his conduct during his father's homicide.