The Minnesota cop who shot and killed an Australian bride-to-be opened fire on her after being startled by a ‘loud sound’ near his patrol car, investigators say. Officer Mohamed Noor, 31, began blasting at 40-year-old Justine Damond, of Minneapolis, just moments after he and his partner, Matthew Harrity, heard the noise in the alley behind her house, according to the state Bureau of Criminal Apprehension.