ST. PAUL--  An uncle of the black Minnesota man fatally shot by police during a traffic stop last week says his nephew "stayed on the straight and narrow" and was "always a good man."

Clarence Castile spoke  on Saturday while standing at the site where Philando Castile was shot and killed by a police officer last week.

Two memorials have been set up at the site, attracting a steady stream of visitors. Many left bouquets of flowers, some left messages, while others used chalk on the street to write condolences and messages of support for the family.

Clarence Castile says Philando was giving, timid and loving. He vowed to "not let my nephew be killed in vain." He says something more has to come from this and he's going to find out what it is.