announced on Thursday the provisional suspension of the process of allowing Russian athletes to return to competition after the country's athletics federation (RusAF) failed to pay a fine for breaking doping rules.
"We recognise these are difficult times, but we are very disappointed by the lack of progress made by RusAF in terms of the requirements set in March," World Athletics president Sebastian Coe said.
In a statement quoted by Russian news agencies, three-time high jump world champion Maria Lasitskene said that she couldn't rule out her "departure from the national team".
A month later the World Anti-Doping Agency banned Russia from global sporting events, including the next two Olympics and the 2022 World Cup, accusing Moscow of falsifying data.
"Sometimes I just want to shake off all this dirt, into which we are dipped endlessly, go into the sunset and never have anything to do with this sport again."
World Athletics' Council will review the situation at a meeting on July 29-30 to ensure the body is not incurring additional costs that may not be reimbursed.