Paris St Germain forward Lionel Messi and three other players have tested positive for COVID-19, the French Ligue 1 club said on Sunday.
Argentina international Messi joined PSG from boyhood club Barcelona in August and the 34-year-old has scored six goals in 16 games in all competitions for the Parisian side.
Defender Juan Bernat, back-up goalkeeper Sergio Rico and midfielder Nathan Bitumazala were the other players who returned positive tests.
PSG said in a statement that the four players were currently in isolation and subject to the appropriate health protocols.
France reported 219,126 new confirmed COVID-19 cases in a 24-hour period on Saturday, the fourth day in a row that the country has recorded more than 200,000 cases.
France has joined the United States, India, Brazil, Britain and Russia in having had more than 10 million cases.
PSG are top of the Ligue 1 standings on 46 points after 19 matches, 13 points above second-placed Nice.
They are due to travel to third-tier club Vannes on Monday for a French Cup round-of-32 match.
Captains will be the only ones allowed to speak to the referee and discuss a decision during matches at the upcoming European Championship in a bid to facilitate clearer communication.
Substitute Jhon Duran scored two late goals as Aston Villa fought back to salvage a 3-3 home draw with Liverpool on Monday and take a significant step towards a place in the Champions League next season.
Arsenal's Leandro Trossard capitalised on dreadful defending to secure a 1-0 win against Manchester United that saw the Gunners climb back to the top of the Premier League, ensuring the title race will be decided on the final day.
UAE Team Emirates rider Tadej Pogacar has retained his overall lead after Dutchman Olav Kooij won stage nine of the Giro d'Italia on Sunday, pipping Jonathan Milan by half a wheel right at the finish line in a breathless sprint at the end of a 214-km ride from Avezzano to Naples.