Olympic green pool: British gold medal winner Jack Laugher claims to have uncovered the mystery of why the pool turned green

NOT content with just winning Olympic gold, diving ace Jack Laugher may have uncovered the great mystery of the green pool too.

Laugher – who secured a brilliant gold with Chris Mears in the men’s synchronised 3m springboard – reckons that the reason why the Olympic pool has turned from blue to bright green is actually rather simple.

The 21-year-old says that the ink from the plastic boards surrounding the pool has found its way into the water.

Laugher said: “We’ve got some big plastic boards that go into the water just for decoration and effect. But you can see on the waterline that they’re blue when below the waterline, and above the waterline it’s green.

“And we think maybe a load of ink has run into the pool potentially. It’s safe and the doctors have given it the all clear or whatever. And it’s different as well, you know, it’s another one of those added different conditions.”

Theories abounded yesterday as to why the pool had turned from blue to green - with some claiming a lack of chlorine allowed algae to grow in the water, while others questioned whether someone had a wee in pool...

A statement from Olympic organisers said water tests were conducted and there was no risk to athletes. They couldn't explain the colour change, but said it's being investigated.

The statement read: "It's very important to the Rio 2016 community to ensure a high quality of play. Tests were conducted and the water was found to be safe. We're investigating what the cause was."