EVERETT, Wash. (Metro) -- Charges are dropped against a Marysville police officer whose daughter was accidentally shot to death. Prosecutors dismissed the manslaughter charges against Derek Carlile after a mistrial had been declared earlier this month. Carlile's 3-year-old son grabbed a revolver in the family van and shot his sister, 7-year-old Jenna. A deputy prosecutor told the Everett "Herald" the charge was dismissed because she didn't think the case would result in a verdict. Copyright © 2012 Metro Networks Inc.