This month's Diving World Cup in Tokyo, a qualifier for July's Olympic Games, has been cancelled by the sport's international governing body FINA because the organisers' planned Covid-19 precautions "will not properly ensure" athletes' safety.
According to a BBC report, FINA also criticised the Japanese government which, in its opinion, "did not take all the necessary measures to ensure successful and fair" competition.
The event was scheduled to run from 18-23 April, and was due to be the final Olympic qualifier and an official test event for the Tokyo Games.
Ireland were due to send four divers to Japan, including Rio 2016 Olympic finalist Oliver Dingley, along with Clare Cryan, Tanya Watson and Ciara McGing.
FINA informed Swim Ireland of the cancellation after receiving what it describes as "worrying" information about the organiser's proposed Covid-19 strategy for the competition
It is understood FINA is also unhappy that several Japanese embassies around the world hadn’t issued visas to some nations who planned to compete, along with the rising costs associated with Covid-19 countermeasures, which FINA has been asked to pay for.
The Japanese government had also insisted on a new three-day quarantine prior to the event which would require late changes to pre-booked travel, which FINA where not happy about.
Some nations had already communicated to the international governing body their intention to withdraw from the event and FINA now aims to find another venue for the competition at a later date.