Australian Alex de Minaur has denied a report that he is under investigation for allegedly purchasing a falsified COVID-19 vaccination certificate.

De Minaur issues a statement on social media Thursday making it “100% clear” that his two vaccination shots were “valid, accurate and true”.

“Hi everyone. I wanted to write a quick message here to avoid any misunderstanding regarding a report that is in the Spanish media about my vaccination certificate,” de Minaur wrote on Twitter.

“I received my first dose of the vaccine in London last summer, and the second one at the Hospital La Paz in Madrid.

“News came out today that the hospital is under investigation for providing falsified covid certificates to some of its patients.

“I want to make it 100% clear that I received my second shot, that I have a completely valid, accurate and true vaccination record.

“Everyone around me, including my family, is fully vaccinated.

“I am not ‘under investigation’ in any way as is being suggested and my name is connected to this story simply because I was a patient at the hospital (as many thousands of others were).”

Media reports in Spain, where he is based, have alleged he was among those being investigated for buying a falsified certificate to bypass vaccinations.

Spanish police told media de Minaur was among a list of athletes and other prominent figures that had featured on a list of alleged buyers.