WAHPETON, N.D. (AP) -- Agencies in Minnesota and North Dakota are investigating a fish kill in a tributary of the Red River.
The kill was discovered late Monday afternoon on the Bois de Sioux River, a couple of miles south of Wahpeton.
Area fisheries supervisor Arlin Schalekamp (SHAL'-eh-kamp) of the Minnesota Department of Natural Resources says the kill involves only carp.
Schalekamp says the kill could have been caused by low oxygen levels in the river or a disease. But he says investigators won't know until samples are analyzed in St. Paul, and that could take a couple of days.
Both the Minnesota DNR and the North Dakota Game and Fish Department are investigating.