An investigation is underway in Bristow after a 7-year-old was sprayed with pepper spray by a postal worker. Officials said there is an ongoing issue in the area with loose dogs chasing mail carriers. “One of our postmen was bitten about a week or two ago on the other side of town. It’s been kind of a thorn, you know? Because a lot of dogs run loose. They aren’t supposed to, but they do,” said resident Ruth Tidwell.