Jeffrey Williams , 20 , is charged with two counts of first - degree assault , prosecutors denied . Prosecutor blamed the public for exposing police to a weapon allegedly used in shooting . Two officers , neither from the Ferguson Police department , were shot during protests last weekend .
Jeffrey Williams , 20 , is charged with two counts of first-degree assault , prosecutor says . Prosecutor thanks the public for leading police to a .40-caliber allegedly used in shooting . Two officers , neither from the Ferguson Police Department , were shot during protests last week .