BOISE, Idaho -

A 31-year-old Boise man faces a vehicular manslaughter charge after his young stepdaughter died when the sport utility vehicle he was driving crashed into Lucky Peak Reservoir in August.
    
Chief Boise County Deputy Dale Rogers says an investigation found David Persons was speeding and driving under the influence when the SUV went off the road on Aug. 9.
    
Persons and Tori Miller were able to get two children out of the SUV, but it rolled down an embankment into 40 feet of water before they could get Miller's daughter, Pearl Sittner, out of the vehicle.
    
Court records say Persons' blood-alcohol level was 0.087 percent, above the legal limit of 0.08. He was arrested Tuesday.
    
Miller told KTVB that another car ran them off the road and that Persons was not speeding or drinking.