Update to this story.

Via Stl Today:

… St. Louis police Chief Sam Dotson spoke with residents at the street protest Sunday night. He said he was sorry about what happened and sought to reassure people the killing did not appear motivated by race or ethnicity.

“There is no indication that the gentleman last night was targeted because he was Bosnian,” Dotson said. “There’s no indication that they knew each other.”

Dotson said Sunday evening that police have two male juveniles, ages 15 and 16, in custody. A third male, 17, was taken into custody late Sunday night.