RIO DE JANEIRO (AP) — The Latest on the 2016 Summer Olympics in Rio de Janeiro (all times local):
4:30 a.m.
While Olympic athletes were getting some well-deserved rest, Olympic officials are racing through the night to drain the murky green water out of a pool at the troubled Maria Lenk Aquatics Center.
The goal is to pump in nearly 1 million gallons of clean water before the synchronized swimming competition takes place Sunday — and even if everything goes right, they will finish barely four hours before it begins.
Rio Olympics spokesman Mario Andrada says the "radical measure" was necessary to ensure clear water for both judges and competitors, since synchronized swimmers spend much of their time underwater.