A 37-year-old black man whose family includes four other convicted killers has been found guilty of second-degree murder in a 2009 robbery attempt

A Jackson County jury also convicted Diamond Blair of robbery and armed criminal action in the death of 22-year-old Montague Kevin Ashline on June 24, 2009, outside a Kansas City apartment complex. Blair, whose uncle is serial killer Terry Blair, already is serving 23 years in prison for other convictions. His mother was charged with murder twice and convicted once for killing her drug-dealing boyfriend in 1989. Diamond Blair has a lengthy rap sheet that includes robbery, kidnapping, assault and weapons violations. The African-American's first arrest came when he was 6 years old.