Police report reveals argument between mailman, alleged assailant preceded killing

Witnesses said the two men began arguing in the store, then walked outside, with Brown heading toward his car and Coats walking north, back in the direction he came. The two continued talking after they split up, when Coats turned around and approached Brown’s car. Coats then took a handgun out of his sweatshirt and fired it four times, then ran with the female he arrived with, police say in the documents.