Rio 2016: Organisers fail to explain why diving pool turned green as Tom Daley asks 'what happened?!'

The pool appeared blue during the men's 10 metre platform event on Monday

The sudden colour change of the water at the Maria Lenk Aquatics Centre during the women's 10 metre synchronised platform final remains a mystery after organisers confirmed they do not know what caused the water to turn green.

On Monday evening, Great Britain's Tom Daley and Dan Goodfellow secured bronze in the men's 10m syncho final, where the water in the diving pool was naturally clear. However, come the women's event on Tuesday, the water was noticeably different after appearing to have turned into a green hue. The difference could be seen clearly when compared to the water polo pool alongside it, which had not changed, and sparked various theories from algae infection, deliberate contamination and possible ramifications from the heat in Rio de Janeiro.

Daley tweeted "Ermmm... what happened?!", alongside a picture of the green-coloured pool, having been captured diving into it the night before in celebration with Goodfellow after the pair secured a medal with their final dive of the night.

The centre plays host to both the diving and waterpolo events.

A statement released by Olympic diving organisers confirmed that an investigation had been launched into the overnight colour change, although they did stress that tests had deemed conditions safe to dive in.

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

Britain's Tonia Couch, who finished the women's final in fifth alongside Lois Toulson after just missing out on a medal themselves, admitted that she had not experienced such a weird change before.

"I've never dived in anything like it," said Couch. "We noticed it in the warm-up and then by the competition it was even more green."