State officials say DNA from Asian carp was found in one water sample among hundreds from northern Ohio rivers feeding into Lake Erie.
The Blade in Toledo reports the genetic material found in northwest Ohio's Maumee River came from silver carp. That's one of two Asian species threatening to enter the Great Lakes, where scientists fear they'd disrupt a multibillion-dollar fishing industry.
The Ohio Department of Natural Resources says the positive DNA result occurred once in 225 samples from the Maumee River, which begins in Indiana. No DNA was found in 100 samples from the Sandusky River in the latest testing.
No live Asian carp were found.
President Barack Obama's administration is spending hundreds of millions of dollars on barriers and projects to keep the Great Lakes carp-free.