Real Madrid star Kylian Mbappé has been released from the hospital after being admitted due to acute gastroenteritis. However, his participation in the FIFA Club World Cup remains uncertain.

The surprising news first came out Thursday morning with word the forward was undergoing “a series of tests” and “treatment” for the ailment.

It was not immediately clear what hospital Mbappé had been admitted to, but Real Madrid’s base camp is in Palm Beach Gardens, Fla.

Later in the day, the club announced he had been discharged from the hospital and “has returned to the Real Madrid Camp.”

“Mbappé will continue with specific medical treatment and will progressively rejoin team activity,” a team statement said.

Real Madrid is scheduled to train over the next few days before their next match Sunday against Paachuca in Charlotte, N.C.

Mbappé was absent for the 1-1 draw against Al-Hilal, with Real Madrid coach Xabi Alonso revealing that the player had been unable to train in recent days.

Alonso expressed concerns about Mbappé’s health, stating that he had been suffering from a virus and that his availability for the next game is uncertain.

Symptoms of gastroenteritis can include vomiting and diarrhea.

Filling in for Mbappé was 21-year-old Gonzalo García, who ended up scoring Real Madrid’s only goal of the match and drew high praise from former club striker Joselu.

Mbappé was Real Madrid’s top scorer last season, putting up 43 goals in 56 games in his first campaign with the La Liga club after making the move from Paris Saint-Germain.

The French footballer is one of the top names participating in this year’s Club World Cup, which is in its first year of a new format that includes expansion to 32 teams, and Real Madrid is one of the favorites to win the monthlong tournament.

Real Madrid is sitting in second place in its group, two points behind RB Salzburg.