Grand jury indicts plant that leaked pig blood into Trinity
Credit: WFAA
The Environmental Protections Agency and the Dallas County Constables raided the Columbia Packing Company Thursday.
Related:
Dallas City Attorney cites plant after pig blood dumped into river
Investigation continues into pigs' blood in the Trinity River
Board rules Dallas plant can't operate as slaughterhouse
Oak Cliff plant investigated in illegal dumping of pig blood 
Dallas firm agrees to halt pig slaughtering
