Lab Results Pending in Massive Belize River Fish KillInvestigators are still waiting on lab results that could explain last week’s massive fish kill in the Belize River Valley, as the Department of the Environment expands its probe into what triggered the die-off. Britney Gordon, ReportingLast week, hundreds of dead fish were discovered along the Belize River Valley, raising concerns among residents and environmentalists. While conditions appear to be improving, investigators are still working to determine the cause of the fish kill. As authorities await test results to determine what caused the fish kill in the Belize River, researchers from the Savanna Field Station are carrying out their own investigation. Investigators are still looking at agricultural runoff as a possible cause of the Belize River fish kill.