ORANGE, Vt. (AP) — State and federal forestry officials were on the ground in Vermont this week trying to determine the scope and severity of an invasive beetle outbreak.

The Department of Forests, Parks and Recreation says the emerald ash borer was found last week in Orange County. It says the insect poses significant ecological and economic threats and has killed tens of millions of ash trees in North America.

Barbara Schultz, who works for the forestry department, tells Vermont Public Radio it is impossible to eradicate the insect, so officials will instead focus on slowing its spread.

Orange County Forester David Paganelli told the Valley News he expects a multicounty quarantine to restrict the transportation of wood from the area.