One person was killed and another injured today in a Bayfield County ATV accident.According to Bayfield County Sheriff Bob Follis, the ATV was traveling at a high rate of speed on Hollander Road about a mile to 1.5 mile north of U.S. Highway 2 when the driver lost control. At least one person hit a tree. The person who was injured was taken to a hospital in Duluth, Follis said.