Yulia Tymoshenko / Photo from UNIAN

Read alsoUkrainian political parties: fresh ratings"Yes, unfortunately, this is true. She tested positive for COVID-19. Her condition is assessed as serious, her temperature is up to 39 [Celsius]. She's fighting [the disease]!" she wrote on Facebook on Sunday, August 23, following some media reports.

Noteworthy, Tymoshenko's daughter Eugenia, as well as Eugenia's husband Arthur Chechetkin, have also fell ill, according to the media reports. However, the press secretary declined to give further detail.

COVID-19 in Ukraine: latest