Ukrainian Prime Minister Oleksiy Honcharuk has submitted his resignation over a leaked audio that alleged he had criticised the president.
Office of President Volodymyr Zelenskiy said the resignation letter was under consideration.
Earlier this week, an audio clip of a man discussing Zelenskiy's purported lack of knowledge of economics at a government meeting went viral on messaging channels.
Honcharuk later claimed the recording had been doctored.
"Its contents artificially create the impression that my team and I do not respect the president, who is our political leader," he said on social media without clarifying if it was his voice in the recording.
Despite no political background, Zelenskiy, a celebrated comic, secured a shocking victory at last year's election.
The Republican-controlled US Senate passed President Donald Trump's tax and spending bill on Tuesday, signing off on a massive package that would enshrine many of his top domestic priorities into law while adding $3.3 trillion to the national debt.
More than a thousand schools were closed in France on Tuesday and the top floor of the Eiffel Tower was shut to tourists as a severe heatwave continued to grip Europe, triggering health alerts across the region.
Thailand's Constitutional Court on Tuesday suspended Prime Minister Paetongtarn Shinawatra from duty pending a case seeking her dismissal, in a major setback for a government under fire on multiple fronts and fighting for its survival.
President Donald Trump has signed an executive order terminating a US sanctions programme on Syria, allowing an end to the country's isolation from the international financial system and building on Washington's pledge to help it rebuild after a devastating civil war.