Indiana Department of Natural Resources fisheries biologists collected fish and water samples at Loon Lake Wednesday as the result of a fish kill involving thousands of crappies that began earlier this week.

Samples were provided Wednesday afternoon to the Animal Disease Diagnostic Laboratory at Purdue University for testing regarding a cause. Results are not expected for weeks, according to a news release from DNR.

Because no significant numbers of other dead small fish species have been observed, the cause is not believed to be the result of a toxic event such as a chemical spill or release.

Biologists will continue to monitor the situation over the coming weeks.