Indianapolis police say a 12-year-old girl died after being struck by a drunk driver on the city’s south side Sunday evening. Tierra Pierson and another girl were walking in the right of way along Bluff Road shortly before 6 p.m. when an SUV swerved off the road and hit them. Both girls were transported to Methodist Hospital, where Pierson’s friend was treated for minor injuries. Investigators say the driver, 30-year-old Trenton Gaff, had blood-alcohol content twice the legal limit of 0.08 percent. Gaff was arrested and faces felony charges of driving under the influence causing death. IMPD Officer Ryan Asher suffered minor injuries when his squad car was struck by an 83-year-old driver during the accident investigation.