St. Louis DA declines charges in Cinco de Mayo shooting case.

St. Louis District Attorney Kim Gardner refused to press charges against a woman involved in a Cinco de Mayo shooting that left two people injured due to a "lack of evidence," despite surveillance footage allegedly showing her wielding a gun. The suspect, Amber Booker, was arrested but released on Wednesday after prosecutors denied a motion to charge her with first-degree assault and armed criminal action. Gardner's office said that Booker might be charged if additional evidence is brought forward. The male suspect involved is still on the run. Gardner has come under increased scrutiny for her approach to prosecution in St. Louis, where murder rates have hit a 50-year high.