State biologists say they've found no signs of a fungus that has killed thousands of bats in Northeastern states after surveys in three caves in Hardy and Grant counties.

The Division of Natural Resources also didn't find signs of so-called white-nose syndrome in a Pendleton County cave that's considered the third-largest hibernation spot in the world for the endangered Virginia big-eared bat.

The DNR has been surveying after turning up suspected cases of white-nose syndrome at four Pendleton County caves in early February. Lab tests to confirm those cases are not finished yet.

White nose syndrome is considered a big danger to bats. Death rates in New York have exceeded 90 percent in some caves.

DNR wildlife biologist Craig Stihler says he's worried there may be no way to stop the disease.