Brazilian soccer great Pele was hospitalised in Paris late on Tuesday night with a strong fever - but his condition is not thought to be life-threatening.
The 78-year-old was admitted as a precaution after attending an event in the French capital with France's World Cup-winning youngster Kylian Mbappe.
A representative for Pele in Brazil could not immediately be reached for comment.
Pele was still in hospital yesterday afternoon, RMC Sport reported, though in a possible sign he was making a recovery, he said on Twitter: "I met Kylian Mbappe and his parents last night in Paris at Hublot event. We talked goals, World Cups and watches. Great company!"
Earlier, Mbappe had written on social media: "I had the chance this evening to spend a once-in-a-lifetime moment with the living legend Pele."Trophy
Pele, revered by many as soccer's greatest ever player, is alone in winning the World Cup three times, first lifting the trophy aged 17.
The Brazilian was swift to praise Mbappe after he set last year's World Cup in Russia alight with his electric speed and goalscoring.
Mbappe became the youngest player (19) to score two goals in a World Cup game since Pele in 1958. He also became the first teenager since Pele to score in a World Cup final.
"If Kylian keeps equalling my records like this I may have to dust my boots off again," Pele tweeted at the time.
Paris St Germain forward Mbappe told Tuesday's event he would never match the Brazil great's scoring tally during his career. Pele claims he scored 1,025 goals.
"Even with the goals in playgrounds, goals on the PlayStation, I could never equal [that]," the 20-year-old said at the event.
Mbappe and Pele had been scheduled to meet late last year but had to postpone, again because of Pele's health.