Tyson Foods is the subject of a federal criminal investigation of its role in the discharge of a food supplement into a southwest Missouri town's wastewater treatment plant.
The Joplin Globe reports the discharge in May allegedly caused the wastewater plant in Monett to fail, leading to a fish kill in nearby Clear Creek, with more than 100,000 fish dying.
Tyson revealed the Environmental Protection Agency's criminal investigation earlier this month in its quarterly notice to the U.S. Securities and Exchange Commission. The company said in a statement Monday that it is cooperating with the investigation.
Missouri Attorney General Chris Koster has filed a six-count lawsuit against Tyson in connection to the discharge.