Five of Barcelona's first-team players tested positive for COVID-19, but the news was not made public, RAC1 reports.
The Catalan radio station made the accusation during its program, Tu Diras.
The five players were not revealed during the broadcast, but it was claimed the positive tests came in towards the start of the crisis.
Each of the players showed no symptoms of COVID-19 and became aware they were positive after undergoing blood tests.
Two of Barca's staff allegedly also tested positive.
All five players who were affected have recovered from the virus and are now believed to be back in full training.
LaLiga resumes June 11.