Police responding to reports of a shotgun blast at a convenience store sounds like the opening of countless American crime movies, but when cops in Nebraska responded to a recent such call they found an unusual culprit: a dog.Local TV station KNOP News 2 reported that police in the town of Scottsbluff were called out to a local store recently after reports of a blast involving a shotgun.Upon arrival they found a truck with blast damage in one of its doors and a woman who had been struck in the arm by a pellet from a shotgun.However, investigation showed a canine cause behind the shooting when it was revealed the blast happened as the vehicle had pulled up to the store as a dog had been moving from one side of its back seat to another.Somehow, the dog had triggered the shotgun – which had a live round chambered – to fire, damaging the vehicle and striking a female passerby.The victim was taken to hospital though not seriously injured.It is illegal in Nebraska to drive with a loaded shotgun in your vehicle.