Investigators say the shooting happened while vehicles were driving through the park, though the exact circumstances and how many people were involved are unknown.

Family members say that Amir Akins, 11, died in his brother's arms as they were rushed to the hospital by a good Samaritan.

Troy Young was relaxing with his dogs on his north Minneapolis porch when a boy ran by, shouting that his 11-year-old brother had been shot down the street. Young, a professional calf roper and a Marine,