I wonder whether this is a biological brother or an adoptive brother. Both nature and nurture can be factors in unprovoked violent behavior.
They are biological from what I’ve read.
Biological brother, according to a number of articles.
It’s very fuzzy how they are related, if at all.
People in there fifties are not normally able to adopt infants. Roger and Lynda Cruz adopted two infants.
Nik was adopted as an infant (weeks old) and this brother is two years younger. Perhaps the bio mother is a young cousin or niece to Lynda Cruz.
Did this boy come from the same source- same bio mother? (Were there chemical dependence issues?)