PIERRE (AP) - Emerald ash borer hasn't yet been found in South Dakota, but officials say the beetle is inching closer.
It has been identified in Omaha, Nebraska.
South Dakota state forester Greg Josten says that brings the closest known infestation within 100 miles of the South Dakota border.
Ash trees are abundant in South Dakota. Josten says the state has a "very active" detection process, which so far hasn't found the emerald ash borer.
The insect moves between communities in firewood. Josten says people should buy firewood locally or get wood other than ash.