Fifty Tons of Dead Fish Wash Up in Mexican Lake

Image: Thousands of dead fish
Fishermen, firefighters, and Agriculture, Cattle, Rural Development, Fish and Food Secretary personnel collaborate in the cleaning of dead fish in the Cajititlan lake, Tlajomulco town, Mexican state of Jalisco, on 31 August 2014. Close to 50 tons of fishes have died over the last six days from unknown causes, for which the Mexican State Attorney for Environmental Protection (Proepa) triggered an environmental contingency in the area. Ulises Ruiz Basurto / EPA

Mexican authorities are investigating after hundreds of thousands of fish died of unknown causes. Fish weighing nearly 50 tons have been found floating in Lake Cajititlan in less than a week, the European Pressphoto Agency reports.

Effluent from local wastewater treatment plants could have caused the fish to die, Jalisco state's secretary for the environment told the BBC.