A relative of the man who killed his father in front of a computer science class at a Casper College this past Friday called him a “borderline genius” upset by the belief he had inherited Asperger’s Syndrome from his dad.

An aunt of 25-year-old Christopher Krumm, Barbara Nichols, of Bakersfield, Calif., says her nephew had trouble keeping jobs and blamed Asperger’s.

Police say Krumm shot 56-year-old James Krumm with an arrow and stabbed him in his classroom Friday morning.

Six students escaped unhurt, but earlier Krumm fatally stabbed his father’s girlfriend, 42-year-old Heidi Arnold, at their home on Casper’s far southwest side.

Christopher Krumm fatally stabbed himself in the classroom.

Asperger’s is a mild form of autism not normally associated with violent behavior. Nichols says she only knew her nephew to be polite and amiable.