Officials with the Iowa Department of Natural Resources say a fish kill was being investigated in Carroll County. The fish died in Brushy Creek near Halbur. A spill of anhydrous ammonia occurred shortly before noon on Saturday at the West Central Coop facility in Halbur.

It is suspected that runoff from washing the area where the spill occurred reached a tributary of Brushy Creek. A DNR inspection of the area on Sunday afternoon found dead fish along approximately two miles of Brushy Creek. Most of the fish were smaller fish species.

The DNR will return to the area on Monday to complete an assessment of the fish kill.