Rio officials probe source of fish die-off in Olympic waters

AP , Wednesday 25 Feb 2015

Rio de Janeiro's state environmental agency is trying to determine why thousands of dead fish have been found floating in waters where next year's Olympic sailing events are to be held.

The agency says the fish were discovered Tuesday by inspectors conducting routine water testing in Rio's sewage- and trash-filled Guanabara Bay. It says an investigation is under way to determine the cause of the die-off, with results expected next week.

The fish were discovered near Rio's international airport and about 12 kilometers (7.5 miles) from the starting point for the 2016 Olympic sailing events.

Fish die-offs are common in several of Rio's blighted waterways.

Authorities have come under fire for their failure to make good on Olympic promises to clean up the waterways.

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