A D.C. police sergeant fired at least 10 rounds into a BMW sedan, killing an armed man as he drove away from officers trying to detain him, a shooting the police chief called inconsistent with policies that generally prohibit firing at moving vehicles. Support our journalism.... Police said the man had a gun tucked in the right side of his waistband. Contee said it is still unclear why the sergeant fired his weapon.... “ It is very difficult to see what the officer was seeing, ” the chief said