AKRON -- Thousands of fish were found dead in Cuyahoga Valley National Park.

The Ohio Division of Wildlife is reporting a fish kill in the Cuyahoga River.

About 2,000 dead fish, mostly minnows, suckers, and carp, were found by investigators this past weekend. The fish were in a fairly advanced state of decomposition, according to a source.

The area affected is about a 3-mile stretch of water starting just north of the Akron Sewage Treatment Plantto Bolanz Road, the home of Szalay's Farm and Market.

The cause of the kill is under investigation by the Ohio EPA. Water testsnow show no toxins present at this timeand ample dissolved oxygen for fish and other aquatic life.