British diver Tom Daley has put the mystery surrounding the green water at the Maria Lenk Aquatics Centre back in the spotlight after revealing the venue was closed on Friday.
It has been one of the strangest stories of Rio 2016, with divers forced to compete in a pool that more closely resembled a pond.
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The International Swimming Federation said a chemical imbalance caused the issue that also affected the water polo arena. A spokesman for FINA insisted that the green water didn't put the athletes at risk, but the decision to close the pool today could reignite concerns.
Among those already concerned was Daley when he found the Aquatics Center shut.
Diving pool is closed this morning. Hopefully that means we haven't been diving in anything too bad the last couple of days!
— Tom Daley (@TomDaley1994) August 12, 2016
Daley won bronze in the synchronized 10 meter platform.
Reporters were also confirming that the pool has been closed.
The Olympic diving pool has been closed again because of water quality issues...a German diver says "the whole building smells like a fart"
— Tom Steinfort (@tomsteinfort) August 12, 2016
Rio 2016 confirm diving pool closed this morning while they continue to sort out the water. One or two athletes had "itchy eyes". Erm..
— Owen Gibson (@owen_g) August 12, 2016