SPRINGFIELD, Ill. (AP) -- The Illinois Environmental Protection Agency is seeking legal action against a large Iroquois County hog farm that allegedly caused a large fish kill after discharging manure into local waterways.

The EPA says Beaver Creek and Hooper Branch were affected between July 20 and July 23 while Hopkins Ridge Farms was applying liquid manure to cropland.

Officials have said more than 60,000 fish were killed.

They're asking the attorney general's office to seek immediate injunctive relief against the farm, the company that built and supports it, an engineering firm and the owner of the land to which the manure was applied.

The EPA says farm operators have appeared unwilling to address the problem and failed to get a Clean Water Act permit.

The farm manager didn't immediately return messages Friday.

Copyright 2012 The AP.

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