THORNTON, IOWA (AP) -- The Iowa Department of Natural Resources is still trying to determine what caused a fish kill that left thousands of fish dead in north-central Iowa.
The DNR said more than 8,000 fish were killed along a five-mile stretch of Bailey Creek near Thornton.
The dead fish include northern pike, smallmouth and largemouth bass, sunfish, bullheads and carp.
DNR environmental specialists discovered the fish kill last week.
The DNR says water samples from the stream are still being analyzed.
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