Sara Sidner , 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 .
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 .