Australia's divers have pulled out of next month's World Cup in Tokyo, saying the Olympic host city isn't safe amid another coronavirus surge.
The move by Diving Australia (DA) on Friday came just hours before Japan's government, as expected, declared state of emergency for Tokyo and three other prefectures from April 25 to May 11 as COVID-19 cases grow.
DA's chief executive David Bell says it means the World Cup in Tokyo from May 1-6 wouldn't be safe for Australia's divers.
"Over the last few weeks it has become clear that it would not be safe to send our athletes and officials to the World Cup," DA said in a statement on Friday.
The World Cup was to have been a qualification event for the Tokyo Olympics due to start on July 23.
Australia's diving officials will seek clarification from swimming and diving's world governing body FINA about the ramifications of withdrawing from the World Cup.
"We continue to engage FINA in dialogue regarding the Olympic qualification flowing from the World Cup," the DA statement said.
"FINA has stated that a 'fair competition is of utmost importance' and that the World Cup should be a 'safe, secure and fair Olympic qualification event'.
"It is our clear position, in light of the current circumstances, that a fair and safe Olympic qualification event is not possible at this time."
DA was confident "that the Olympics will be a safe event".
"Both DA and the Australian Olympic Committee believe athletes will be vaccinated ahead of the Games," the statement said.
"Vaccination has not been possible ahead of the World Cup."