Rio diving pool changes color from blue to green overnight - China won its third consecutive diving gold medal on Tuesday, but the buzz was about the color of the water in the diving pool, which turned from a clear blue to a murky green overnight.

The adjacent swimming pool was not affected.

Water quality has been a major issue surrounding the Rio Olympics, but in the ocean and lagoons, not the venue pools.

A statement from Rio 2016 organizers says water tests were conducted and there is no risk to athletes. Organizers say they're investigating what caused the color change.

American diver David Boudia, who won silver while diving into blue water on Monday, tweeted a photo of the pool with the text, "Wait is someone playing a joke or are we celebrating St Patty's Day early here in Rio?"

British diver Tom Daley, who took bronze on Monday, tweeted a photo of the two pools next to each other and captioned it, "Ermmm…what happened?!"

The Associated Press contributed to this report

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